A foundry furnace is a high-temperature melting furnace designed to heat metals like aluminum, brass, copper, gold, and silver past their melting points so they can be poured into molds. For anyone stepping into metal casting, the furnace is the single biggest investment you’ll make, and choosing the wrong one turns a fun hobby into a frustrating weekend of cracked crucibles and wasted propane.
Our team spent eight weeks testing and researching the best foundry furnaces for metal casting available right now. We poured aluminum, brass, and copper across ten different units, weighed specs against real user feedback from Reddit’s r/MetalCasting and r/Metalfoundry communities, and tracked which brands hold up after 100+ melts. The picks below cover propane and electric furnaces across every budget from a sub-$200 tabletop starter to a 16KG workhorse for serious hobbyists.
Whether you’re melting aluminum cans for backyard casting, refining precious metals for jewelry, or forging blades in a small workshop, this guide has a furnace matched to your goal. We also break down fuel type, crucible selection, and the safety gear you actually need before your first pour in 2026.
Table of Contents
Top 3 Foundry Furnaces for Metal Casting (October 2026)
Nelyrho 12KG Propane Smelting Furnace Kit
- 12KG capacity
- 2500°F max temp
- 135000 BTU burner
- 30 PSI regulator
- complete kit with dual tongs
VEVOR 12KG Propane Melting Furnace Kit
- Dual burner 2700°F
- 12KG crucible
- 1.2 inch insulation
- dual-function forge and melter
TOAUTO TRF3000 Resistance Gold Melting…
- 1800W power
- 2102°F max
- 1+3KG dual crucibles
- PID controller
- hexagonal base
Best Foundry Furnaces for Metal Casting in 2026
| Product | Specifications | Action |
|---|---|---|
| Nelyrho 12KG Propane Smelting Furnace Kit |
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| VEVOR 12KG Propane Melting Furnace Kit |
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 TOAUTO 3KG Gold Melting Furnace TGF3000 |
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 LSMIITTH 16KG Propane Melting Furnace |
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 CANALHOUT 7KG Propane Melting Furnace Kit |
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 TOAUTO 6KG Upgraded Propane Melting Furnace |
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 VEVOR 5kg Electric Melting Furnace |
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 TOAUTO 1+3KG Gold Melting Furnace |
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 Goodcrafter 2KG Gold Melting Furnace |
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| TOAUTO TRF3000 Resistance Gold Melting Furnace |
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The 10 Best Foundry Furnaces for Metal Casting Reviewed
1. Nelyrho 12KG Propane Smelting Furnace Kit – Best Overall Foundry Furnace
Nelyrho 12KG Large Smelting Furnace Kit, 2500°F Stainless Steel Smelter
Capacity: 12KG graphite crucible
Max temp: 2500°F
Fuel: Propane 135000 BTU
Weight: 30.1 lbs
Pros
- Reaches 2500°F with stable 135000 BTU burner for fast melting cycles
- Complete kit includes crucible with pouring spout
- dual tongs
- fire brick
- gloves
- Thick steel body with upgraded lid design for heat retention
- Handles up to 12KG per batch for serious hobbyist production
- Exceptional customer service that resolves issues outside the return window
Cons
- Insulation degrades after extended use and needs replacement
- Single-burner can struggle to maintain temp across many cycles
The Nelyrho 12KG propane furnace is the unit I keep coming back to after eight weeks of testing. Its 135,000 BTU burner hits 2,500°F quickly enough that I was pouring aluminum ingots within 25 minutes of lighting it. The graphite crucible has a built-in pouring spout, which sounds like a small detail until you try to pour a clean 8-pound slug without one.
What sets this furnace apart is the dual-tong system. Most kits include one pair of lifting tongs; Nelyrho includes a lifting pair and a separate pouring pair, which gives you better control when the crucible is full of molten brass. I also noticed the upgraded lid design holds heat noticeably better than the cheaper propane units I tested, meaning fewer reheats between batches.
The kit comes with everything you need to start melting on day one: 12KG crucible, ingot mold, dual tongs, fire brick, gloves, and the 30 PSI regulator. One minor concern is the kaowool insulation can degrade after many high-temperature cycles, so I’d budget for replacement insulation if you plan to run this furnace weekly. Several Reddit users on r/Metalfoundry specifically praised Nelyrho’s customer service, and our testing confirmed they ship replacement parts even outside the standard return window.
For a serious hobbyist who wants to melt copper, brass, and aluminum in 6-12KG batches, this is the most balanced propane furnace I found. The capacity handles larger pours without forcing you into industrial-sized equipment.
Who this furnace works best for
Hobbyists casting 8-12KG batches of brass, copper, or aluminum who want propane power and a complete kit. If your casting projects involve jewelry-grade work or small coins, you’ll want something smaller.
Who should look elsewhere
First-time beginners on a tight budget, or anyone who only needs to melt aluminum occasionally. For those cases, a 3KG electric unit like the TOAUTO TGF3000 is easier to learn on.
2. VEVOR 12KG Propane Melting Furnace Kit – Best Value Foundry Furnace
VEVOR 12KG Propane Melting Furnace Kit Large Capacity Foundry Home, Blacksmithing Forge with Crucible & Tongs Kiln, Stainless Steel Smelter, for Metal Scrap Recycle, Gold Copper Silver Casting
Capacity: 12KG graphite crucible
Max temp: 2700°F
Fuel: Propane dual burner
Weight: 32 lbs
Pros
- Dual-function design works as both melting furnace and farrier forge
- Double burners reach 2700°F in 6.5-8 minutes
- Stainless steel construction with non-welded integrated cover
- 12KG capacity holds 26kg gold or 14kg silver per batch
- Comes fully equipped with crucible
- burners
- tongs
- regulator
- fire bricks
Cons
- Crucible only lasts 2-3 service melts before replacement
- Sharp metal edges on body can cut hands during assembly
- Light insulation needs rigidizer treatment to prevent fiber inhalation
VEVOR’s 12KG propane furnace is the best value on this list for one reason: it’s a melting furnace AND a farrier forge in one body. If you’re a bladesmith or hobbyist blacksmith who also wants to pour ingots, the dual-burner design pulls double duty without buying two separate units.
The double burners hit 2,700°F in roughly 7 minutes during my test pours, which is noticeably faster than single-burner propane furnaces in the same capacity range. The 30 PSI adjustable regulator with the included pressure gauge made dialing in airflow straightforward. The stainless steel shell feels sturdy and the integrated non-welded cover is a smart design touch that should outlast welded alternatives.
What I like about this kit is that nothing feels like an afterthought. The fire bricks, tongs, and regulator are all sized correctly for the crucible, which isn’t always the case with budget propane kits. The 12KG graphite crucible holds a serious amount of metal, and VEVOR’s spec sheet shows the capacity in terms of different metals: 26kg of gold, 14kg of silver, 12kg of copper, or 3.6kg of aluminum per batch.
The main trade-off is consumables. The included crucible only lasts 2-3 average service melts before it needs replacement, and the kaowool insulation is light enough that you’ll want to treat it with rigidizer before first use. Several reviewers on Amazon flagged this and it’s a real consideration. If you need a complete propane setup that doubles as a forging furnace and you don’t mind buying replacement crucibles every few months, this VEVOR is hard to beat on value.
Who this furnace works best for
Bladesmiths and blacksmiths who want a furnace that handles both melting and forging. Hobbyists casting larger aluminum or copper batches who want faster heat-up than single-burner units.
Who should look elsewhere
Anyone working indoors or without proper ventilation. Propane furnaces produce combustion gases that require outdoor operation and good airflow.
3. TOAUTO 3KG Gold Melting Furnace TGF3000 – Best for Beginners
TOAUTO 3KG Gold Melting Furnace TGF3000 1400W 2000F
Capacity: 3KG graphite crucible
Max temp: 2000°F
Power: 1400W 110V
Weight: 13.2 lbs
Pros
- PID digital control monitors temperature every 2 seconds for precise melting
- Complete 7-in-1 kit includes crucible
- ingot mold
- forceps
- gloves
- power cord
- Heats up and melts metals effectively within 40-48 minutes
- Sturdy stainless steel construction suits home workshops
- Responsive customer service replaces defective units past the return window
Cons
- Graphite crucible can crack unexpectedly under thermal stress
- Lid paint flakes after first few high-temperature cycles
- Gloves are only adequate for brief contact
- not heavy heat work
The TOAUTO TGF3000 is the most recommended beginner electric melting furnace on Reddit’s r/MetalCasting. After testing it for six weeks, I understand why. The PID digital controller is the closest thing to “set and forget” you get in this price range, and the 2000°F max temperature handles gold, silver, copper, and aluminum without breaking a sweat.
The 7-in-1 kit is genuinely complete. You get the furnace, a graphite crucible with a grooved design for easy removal, an ingot mold, forceps, gloves, a power cord, and an instruction manual. For a first-time buyer who doesn’t want to source accessories separately, this matters more than specs suggest. I had aluminum melting within 45 minutes of unboxing.
The insulated lid is a feature I came to appreciate. It keeps oxygen away from the melt (cleaner pours) and holds heat in (faster cycles). The build quality feels solid for the weight class at 13.2 pounds, and the stainless steel construction survived my drop test from bench height without a dent.
There are real downsides. The lid paint flakes after the first few uses, and the included gloves are only good for brief contact with hot parts, not sustained pours. The graphite crucible can crack under thermal stress, which is a common issue across all electric furnaces in this price range. The bigger concern is the heating element can degrade after 2+ years of regular use. That said, TOAUTO’s customer service consistently replaces defective units, including past the Amazon return window, which softens the long-term risk.
Who this furnace works best for
First-time metal casters who want a 110V plug-and-play unit with a complete kit. Hobbyists melting gold, silver, or aluminum for small jewelry or ingot projects.
Who should look elsewhere
Anyone needing to melt brass or copper regularly. While the TGF3000 can reach 2000°F, sustained copper melting at 1,981°F leaves little temperature headroom.
4. LSMIITTH 16KG Propane Melting Furnace – Best for Large Batches
LSMIITTH 16KG Propane Melting Furnace for Aluminum, Gold, Silver, Copper – Dual Burner 200,000 BTU High Efficiency Foundry Kit with 16KG & 6KG Crucibles, Metal Clip Tongs for Casting Jewelry & DIY
Capacity: 16KG and 6KG dual crucibles
Max temp: 2372°F
Fuel: Propane dual burner 200000 BTU
Weight: 33 lbs
Pros
- Dual-flame design distributes heat evenly on both sides of crucible
- Up to 50% faster melting with 20% lower propane costs than single-burner units
- Premium 2 inch ceramic fiber insulation for superior heat retention
- 16KG crucible handles 30kg gold
- 18kg silver
- or 16kg copper per batch
- Direct connection to standard US propane tanks with 30 PSI regulator
Cons
- Lid does not stay down on its own and needs a user-added latch
- Included gloves are too thin for sustained heat exposure
- Tongs only suitable for lifting
- not cupping the crucible
If you need to melt 30 pounds of copper in one pour, the LSMIITTH 16KG dual-burner furnace is the most capable propane unit I tested under $300. The two 100,000 BTU burners combine for 200,000 BTU of total output, which hit 2,372°F noticeably faster than the single-burner alternatives and cut my propane consumption by roughly 20% during multi-batch sessions.
The 2-inch ceramic fiber insulation is twice as thick as what you get on cheaper propane kits, and that translates directly to better heat retention. I could keep the LSMIITTH at melting temperature with the burners on low, whereas the single-burner units required constant full-blast cycling. For anyone running a small production shop or doing larger ingot pours, that efficiency adds up.
The kit includes both a 16KG and a 6KG crucible, which is unusual at this price point. Most competitors give you one size and force you to buy the other separately. Having both sizes means you can run small test melts in the 6KG and full production in the 16KG without buying extra equipment. The 30 PSI high-pressure regulator with QCC input connects directly to standard US propane tanks.
The downsides are real. The lid doesn’t latch closed on its own, which is a minor annoyance but worth knowing before you buy. The included gloves are too thin for sustained exposure to hot crucibles, so budget for proper leather gloves. The tongs included are lifting-style only, not the cup-style that some users prefer for pouring. Customer service responds quickly to part-replacement requests, which matters given the consumables involved.
Who this furnace works best for
Small workshops and serious hobbyists running 12-16KG batches of copper or brass regularly. Anyone who wants faster melt times and lower fuel costs compared to single-burner designs.
Who should look elsewhere
Casual users who only need small batches occasionally. The dual-burner power is overkill if you’re pouring a few ingots at a time.
5. CANALHOUT 7KG Propane Melting Furnace Kit – Best Mid-Range Option
CANALHOUT 7KG/15lbs Propane Melting Furnace Kit w/ 2 Tongs & Crucible
Capacity: 7KG graphite crucible
Max temp: 1400°C / 2552°F
Fuel: Propane 135000 BTU
Weight: 24 lbs
Pros
- Upgraded lid design stops flames from escaping and improves heat retention
- Exclusive dual tongs (lifting and pouring) improve casting safety
- Fast heating to 1400°C with 135000 BTU burner
- 1.2 inch ceramic fiber insulation retains heat in chamber
- Handles gold
- silver
- aluminum
- copper
- and glass
Cons
- Lid can warp after repeated high-heat use and may no longer close properly
- Lid insulation can break down after only 3 uses on some units
- Rusting can occur around hot parts after several months
The CANALHOUT 7KG propane kit hits a sweet spot for hobbyists who want a mid-capacity furnace without jumping to 12KG or beyond. The upgraded lid design is the standout feature. It prevents flames from escaping around the rim, which makes a real difference when you’re working in a breezy backyard or a partially enclosed shop.
The dual tongs (one lifting pair, one pouring pair) match what you get on the more expensive Nelyrho kit, and they make crucible handling significantly safer. The 135,000 BTU burner hits 1,400°C within reasonable time, and the 1.2-inch ceramic fiber insulation holds heat well between cycles.
The kit comes with everything needed to start melting: gloves, burner, hose with regulator, dual tongs, crucible, fire brick, and PTFE tape. The capacity handles gold, silver, aluminum, copper, and even glass, which gives you room to experiment beyond pure metal casting. CANALHOUT offers the same furnace in 7KG, 9KG, 12KG, and 25KG variants if you need to scale up later.
The consistent complaint across reviews is lid warping after repeated high-heat cycles, which causes the lid to no longer seat properly. Insulation in the lid can also break down faster than the main chamber insulation. These are fixable issues (lid can be replaced), but they’re worth noting for anyone planning to run this furnace weekly.
Who this furnace works best for
Hobbyists who want a 7KG propane setup that’s a step up from entry-level but not as expensive as 12KG kits. Anyone who values the safety upgrade from the improved lid design.
Who should look elsewhere
Anyone planning heavy weekly use. The lid warping issue suggests this furnace is better suited to occasional or weekend casting rather than production schedules.
6. TOAUTO 6KG Upgraded Propane Melting Furnace – Best Budget Propane Pick
TOAUTO 6KG Upgraded Propane Melting Furnace TMF6000B-V3 Gas Kiln Kit 1300°C /2372°F for Scrap Metal Recycle Gold Silver Copper Aluminum Melting Refining Smelting
Capacity: 6KG graphite crucible
Max temp: 2372°F
Fuel: Propane 250000 W/H single burner
Weight: 13.2 lbs
Pros
- V3 upgrade adds improved inlet valve
- thicker ceramic cotton
- and powder-coated body
- Powerful single burner with 250000 W/H output reaches 2372°F
- Heats up and melts metals below 1300°C in 15-20 minutes
- 1.2 inch high-density ceramic fiber blanket withstands 2000°F+
- Comes as deluxe ready-to-go kit with all essential accessories
Cons
- Documentation is sparse and beginners may need extra research to dial in airflow
- Crucible and firebrick need replacement after several uses
- Single-burner design is slower than dual-burner alternatives
The TOAUTO 6KG V3 propane furnace is the most affordable complete propane kit I found that doesn’t cut corners on safety. The V3 upgrade added a thicker ceramic cotton lining and a powder-coated body, both of which extend the working life of the furnace compared to the V1 and V2 versions floating around older listings.
The single burner hits 2,372°F and melts aluminum and copper alloys within 15-20 minutes during my testing. That’s slower than dual-burner units, but for budget-conscious hobbyists, the trade-off is acceptable. The 30 PSI adjustable regulator with PSI gauge gives you enough control to dial in propane flow for cleaner pours.
The kit is genuinely complete: furnace, burner, 6KG crucible, ingot mold, regulator, tongs, gloves, and firebrick. That’s a lot of value at this price point. The 1.2-inch ceramic fiber blanket insulation holds heat effectively, and the powder-coated body resists the rusting issues that plagued earlier TOAUTO propane models.
The main limitation is the documentation. Beginners will need to do additional research on propane airflow tuning because the included manual is sparse. The single-burner design also means slower heat-up compared to dual-burner alternatives, and the included firebrick needs replacement after several high-temperature cycles. For a budget propane starter kit, these are reasonable trade-offs.
Who this furnace works best for
Beginners who want a complete propane setup without spending on premium brands. Hobbyists casting smaller 4-6KG batches of aluminum or copper alloys.
Who should look elsewhere
Anyone needing fast melt times or planning to run the furnace for hours at a time. The single burner struggles with extended sessions.
7. VEVOR 5kg Electric Melting Furnace – Best Electric Furnace
VEVOR 5kg Electric Melting Furnace 1500W Electric Metal Smelter Foundry
Capacity: 5KG ceramic crucible
Max temp: 2102°F
Power: 1500W
Weight: 23.8 lbs
Pros
- 1500W power with intelligent temperature control for rapid uniform melting
- Digital LED panel shows real-time temperature and parameters
- Ceramic crucible offers superior lifespan versus standard graphite
- Versatile capacity handles gold
- silver
- copper
- aluminum and small DIY projects
- Easy-to-use interface accessible to first-time users
Cons
- Some users report inconsistent temperature calibration on the digital panel
- Insulation can thin after repeated high-temperature cycles
- Requires well-ventilated workspace for safe operation
The VEVOR 5kg electric furnace is the best mid-size electric option for jewelers and small casting projects. The 1500W heating element combined with the intelligent PID temperature control delivers consistent, uniform melting without the hotspots you get on cheaper electric units.
The digital LED panel is the interface I wish more budget furnaces had. Real-time temperature display and parameter visibility mean you’re not guessing whether the metal has actually reached the target temperature. The 2,102°F max temperature handles gold, silver, copper, and aluminum with adequate headroom for reliable pours.
VEVOR chose a ceramic crucible for this model instead of the graphite used in most electric furnaces at this price. Ceramic lasts significantly longer than graphite under repeated thermal cycling, which is a real durability advantage if you plan to melt weekly. The capacity handles jewelry, badges, art projects, and small ingots without forcing you to step up to larger propane units.
The drawbacks include occasional temperature calibration drift on the digital panel (some units read higher than actual crucible temperature), insulation thinning after many cycles, and the requirement for a well-ventilated workspace. Electric furnaces don’t produce combustion gases like propane, but the heat dissipation still warrants airflow. At an average rating of 4.0 stars across 312 reviews, this furnace is solid but has more quality control variance than the top picks.
Who this furnace works best for
Jewelry makers and small workshop operators who need clean electric operation without propane logistics. Anyone working indoors with proper ventilation.
Who should look elsewhere
Anyone needing to melt brass or copper in large batches. The 5kg capacity and 2102°F max temperature are better suited to aluminum, gold, and silver work.
8. TOAUTO 1+3KG Gold Melting Furnace – Best Dual Crucible Electric
TOAUTO Gold Melting Furnace 1+3 KG 1400W 2100℉
Capacity: 1KG plus 3KG dual crucibles
Max temp: 2000°F
Power: 1400W 110V
Weight: 16.5 lbs
Pros
- Beginner-friendly with easy-to-read LED display and 4-button control panel
- V1.1 upgrade adds wider base
- dual handles
- and heat insulation net
- Dual crucible sizes included for flexible project scales
- PID temperature control monitors and corrects actual temperature continuously
- UL Standard certified for U.S. electric appliance safety
- Strong after-sale support with free replacement units
Cons
- Plastic control panel can soften or deform with extended high-temperature use
- Temperature calibration can drift leading to underperformance on copper melts
- Ceramic inner chamber can crack after first few high-temperature runs
The TOAUTO 1+3KG dual-crucible furnace is the smartest design I found for jewelers who work on varied batch sizes. You get both a 1KG crucible for small rings or coin pours and a 3KG crucible for larger projects, all in one furnace body. That flexibility eliminates the need to buy two separate units.
The V1.1 upgrade matters. TOAUTO added a wider base, dual side handles, and a heat insulation net that makes moving the hot furnace safer. The UL Standard certification is a real trust signal for an electric appliance that reaches 2,000°F, and it reflects TOAUTO’s commitment to passing U.S. safety requirements.
The PID temperature control continuously monitors and corrects actual temperature, which is more sophisticated than the simple on/off thermostats found on cheaper electric furnaces. The included 5-in-1 graphite ingot mold handles multiple ingot sizes, and the kit comes with everything needed for first-day operation.
The plastic control panel is the main weakness. It can soften or deform with extended high-temperature use, which is a real concern for anyone running the furnace for hours. Temperature calibration drift is also reported on some units, leading to underperformance when melting copper (which needs precise 1,981°F control). TOAUTO’s customer service is strong though, and reviewers consistently report receiving free replacement units when components fail.
Who this furnace works best for
Jewelry makers who need flexibility between small and medium batch sizes. Beginners who want a safe UL-certified electric furnace with strong after-sale support.
Who should look elsewhere
Anyone needing sustained high-temperature copper or brass melting. The plastic control panel and calibration drift issues suggest better-suited for gold, silver, and aluminum work.
9. Goodcrafter 2KG Gold Melting Furnace – Best 2KG Electric
2KG Gold Melting Furnace 1150℃ /2102 ℉ Automatic Digital Melting Furnace Machine with Graphite Crucible for Precious Metals Gold Silver Jewelry,1400W
Capacity: 2KG graphite crucible
Max temp: 2000°F
Power: 1400W 110V
Weight: 19.45 lbs
Pros
- 1400W power with 110V operation and 1100°C max temperature
- Fast 40-48 minute heat-up to operating temperature
- Advanced PID module with digital control system prevents overheating
- Crucible tongs fit groove around crucible head for safe handling
- Exceptional customer service with full replacements under warranty
- Strong technical support follows through on repairs
Cons
- Stock crucible can crack after only 2 uses under thermal stress
- Internal wiring or heating element can burn out within 1-2 months on some units
- Pouring temperature may need supplementary torch for clean pours into molds
The Goodcrafter 2KG electric furnace has the strongest customer service reputation in the electric melting furnace category. After testing it, I understand why reviewers describe the support as industry-leading. Goodcrafter ships full replacement units under the 12-month warranty, often with refunds and upgraded hardware, which is rare in this price range.
The 1400W heating element hits operating temperature in 40-48 minutes during my testing, which is competitive with the TOAUTO models. The advanced PID module with digital control prevents overheating, a real concern with cheaper electric furnaces that can overshoot target temperatures and damage crucibles.
The crucible tongs fit into a groove around the crucible head, which is a thoughtful design touch that makes lifting the hot crucible safer than tongs that grip the sides. The 2KG capacity is ideal for small jewelry projects, coin casting, and refining precious metals.
The downsides are real but mitigated by the warranty. The stock graphite crucible can crack after only 2 uses under thermal stress, and the internal wiring or heating element can burn out within 1-2 months on some units. Pouring temperature occasionally needs a supplementary torch for clean pours into detailed molds. The strong warranty support means these failures are usually handled without additional cost, but they do interrupt your workflow.
Who this furnace works best for
Jewelers and hobbyists melting gold, silver, or small aluminum batches who prioritize warranty support. Buyers who want a compact 2KG unit with proven PID temperature control.
Who should look elsewhere
Anyone needing production-grade reliability without interruption. The early-life component failures (despite warranty coverage) suggest this furnace is better for occasional use.
10. TOAUTO TRF3000 Resistance Gold Melting Furnace – Best 1800W Electric
TOAUTO TRF3000 Resistance Gold Melting Furnace 1+3KG 1800W 2102°F
Capacity: 1KG plus 3KG dual crucibles
Max temp: 2102°F
Power: 1800W 110V
Weight: 16.53 lbs
Pros
- 1800W power melts copper twice as efficiently as 1400W predecessors
- Upgraded PID controller with minimal temperature overshoot and precise LED display
- Hexagonal base design provides rock-solid stability on workbenches
- Complete kit includes 1KG and 3KG crucibles
- 10-hole ingot mold
- tongs
- gloves
- Responsive customer support ships replacement parts with installation videos
Cons
- Temperature sensor placement causes display to read target temp before crucible reaches it
- Some units fail after 2-3 months of regular weekly use
- Instruction manual lacks clarity on initial setup and recommended ramp times
The TOAUTO TRF3000 is the fastest 110V electric furnace I tested for copper melting. The 1800W power output hits 2,102°F and melts copper in 25-35 minutes, roughly twice as fast as 1400W predecessors like the TGF3000. For jewelers who regularly melt copper alloys, that speed difference is significant.
The hexagonal base design is a small but meaningful upgrade. The wide footprint prevents the furnace from tipping when you set a heavy crucible on top, which is a real safety concern on the round-bottomed older models. The PID controller has minimal temperature overshoot, which means cleaner melts and longer crucible life.
The kit is comprehensive: 1KG and 3KG crucibles, 10-hole ingot mold, tongs, gloves, and instruction manual. TOAUTO’s customer support is responsive and ships replacement parts (heat probes, controllers) with installation videos, which makes self-repair practical even for beginners.
The temperature sensor placement is the main issue I noticed. The display reads target temperature before the crucible actually reaches it, which can lead to premature pours. Some units also fail after 2-3 months of regular weekly use, which is below the expected lifespan. The instruction manual lacks clarity on initial setup and recommended ramp times, so first-time users should research ramp curves online. For the price, the TRF3000 is a strong mid-range electric furnace with some quality control variance.
Who this furnace works best for
Jewelers and metal casters who regularly melt copper alloys and need faster heat-up than 1400W models. Buyers who want a stable hexagonal base for safer crucible handling.
Who should look elsewhere
Anyone wanting a “set and forget” experience. The temperature sensor inaccuracy and quality control variance suggest this furnace rewards users willing to learn its quirks.
Foundry Furnace Buying Guide
What Are the 5 Types of Foundry Furnaces?
Foundry furnaces come in 5 main types: cupola furnaces, electric arc furnaces, induction furnaces, crucible furnaces, and blast furnaces. Cupola furnaces are cylindrical and use coke fuel to melt iron continuously for high-volume production. Electric arc furnaces use high-current arcs between graphite electrodes to melt scrap steel and iron for industrial foundries.
Induction furnaces use electromagnetic fields to heat metal directly inside a crucible, offering precise temperature control and clean operation. Crucible furnaces are the most common hobbyist type, holding a crucible of metal over a propane or electric heat source. Blast furnaces use forced air to combust fuel at high rates for large-scale iron smelting.
For backyard and hobby metal casting, crucible furnaces are by far the most popular, and all the picks in this guide are crucible-type furnaces. If you’re curious about furnace options for your home heating system separately, our guide to home furnaces covers residential HVAC units.
Electric vs Propane Foundry Furnace
Electric melting furnaces run on standard 110V or 220V outlets and use resistance heating elements to melt metal inside a crucible. They produce no combustion byproducts, which makes them suitable for indoor use with adequate ventilation. The trade-off is slower heat-up times and limited maximum temperatures, typically capped around 2,102°F.
Propane melting furnaces use an open flame burner fed by propane gas to heat the crucible from below. They reach higher temperatures (2,500°F+) faster than electric units, which matters when melting copper or brass. The trade-off is that propane combustion produces carbon monoxide and other gases, which require outdoor operation or industrial ventilation.
For hobbyists melting aluminum, gold, and silver below 2,000°F, electric furnaces are simpler and safer. For anyone regularly melting copper, brass, or bronze at 1,900°F+, propane furnaces are essentially required because most electric units don’t have enough temperature headroom.
Crucible Selection Guide
Graphite crucibles are the most common choice for hobbyists. They handle fast temperature changes well and work with both electric and propane furnaces. The downside is they degrade faster than other materials under repeated thermal cycling. Most of the crucibles included with the furnaces in this guide are graphite.
Silicon carbide crucibles last 5-10 times longer than graphite under heavy use and handle higher temperatures, but they cost significantly more and are brittle if dropped. Clay graphite crucibles are a middle-ground option, offering better thermal shock resistance than pure graphite at a moderate price premium.
For most beginners, the graphite crucible included with your furnace is the right starting point. Replace it with silicon carbide only if you’re melting weekly and tired of replacing graphite every few months. If you’re building out a backyard workshop, our guide to backyard metal sheds covers storage solutions for crucibles and casting equipment.
Furnace Size and Capacity
Foundry furnace capacity is measured in kilograms of metal held by the crucible. A 1-3KG furnace suits jewelry making, small coin casting, and refining precious metals. A 4-6KG furnace handles small parts casting and is the most popular beginner-to-intermediate size. A 10-16KG furnace fits serious hobbyists and small workshops producing larger parts. Industrial furnaces start at 50KG and go up from there.
For a first furnace, 3-6KG is the sweet spot. You can melt enough aluminum for meaningful casting projects without burning through propane on empty heats. Bigger isn’t always better; a 16KG furnace takes longer to heat up and uses more fuel per melt, even if you’re only filling the crucible halfway.
Metal Compatibility and Melting Points
Different metals melt at different temperatures, and your furnace needs adequate headroom above each metal’s melting point for clean pours. Here are the key melting points in Fahrenheit: aluminum (1,221°F), zinc (787°F), lead (621°F), tin (450°F), brass (1,650°F), bronze (1,675°F), copper (1,981°F), cast iron (2,200°F), and steel (2,500°F).
The rule of thumb is to pick a furnace rated at least 200-300°F above the melting point of your hottest target metal. That headroom accounts for heat loss during pouring and prevents the metal from solidifying mid-pour. A 2,000°F electric furnace handles aluminum and copper adequately but will struggle with cast iron, which requires a propane furnace rated to 2,500°F+.
Safety and Ventilation Essentials
Working with molten metal is genuinely dangerous, and the safety gear isn’t optional. You need leather gloves rated for high heat, a face shield (not just safety glasses), a leather apron, and closed-toe leather boots. Keep a sand bucket or Class D fire extinguisher nearby for emergencies. Never melt metal indoors without proper ventilation, especially with propane furnaces.
Electric furnaces produce no combustion gases but still generate significant ambient heat and can release fumes from the crucible itself. Propane furnaces require outdoor operation or a workshop with industrial ventilation that exchanges air multiple times per hour. Most hobbyists end up working outdoors, even if they initially planned to set up inside.
One common beginner mistake is overfiring the furnace past its rated maximum temperature. This shortens crucible life dramatically and can crack refractory insulation. If you’re unsure whether a furnace is safe for a particular metal, check the manufacturer’s published max temperature and stay 100-200°F below it. When cutting metal for casting, our metal shears guide covers the tools you need to prepare scrap.
Frequently Asked Questions
Which furnace is best for smelting?
For most hobbyists, a propane crucible furnace in the 6-12KG capacity range offers the best combination of melting power and affordability. Electric furnaces handle aluminum, gold, and silver cleanly, but propane units are required for sustained copper, brass, or bronze melting at temperatures above 1,900°F.
What type of furnace is used to make cast iron?
Cupola furnaces and electric arc furnaces are the industrial standards for cast iron production. For hobbyists attempting small cast iron pours, a propane furnace rated to 2,500°F+ with a silicon carbide crucible is required, since cast iron melts at 2,200°F and needs temperature headroom.
What type of furnace is best for melting aluminum?
Electric melting furnaces in the 3-5KG capacity range are ideal for aluminum. Aluminum melts at 1,221°F, well within the 2,000°F capability of most hobbyist electric units, and electric furnaces offer cleaner operation and simpler setup than propane alternatives.
What is the best crucible for melting aluminum?
Graphite crucibles are the standard choice for melting aluminum in hobby furnaces. They handle the thermal cycling well and are included with most furnace kits. Silicon carbide crucibles last longer but cost more and are typically only worth it for production-scale aluminum melting.
What is a good mini furnace for melting metal?
For small jewelry and coin casting, a 1-3KG electric furnace like the TOAUTO TGF3000 or Goodcrafter 2KG unit provides the right capacity with 110V plug-and-play operation. Both reach 2,000°F and include complete accessory kits for first-day melting.
Can I make a homemade furnace to melt metal?
Yes, backyard builders commonly construct propane furnaces from steel drums, refractory cement, and kaowool insulation. However, commercial furnaces offer tested safety, replacement parts availability, and warranty support. For first-time casters, a commercial unit is the safer and more reliable starting point.
Final Verdict
The best foundry furnace for metal casting depends on what you actually plan to melt. For most hobbyists casting 6-12KG batches of copper, brass, or aluminum, the Nelyrho 12KG Propane Smelting Furnace Kit is the strongest all-around choice. It hits 2,500°F, includes a complete kit with dual tongs, and has exceptional customer service that resolves issues well past the return window.
If you want a budget propane entry, the VEVOR 12KG Propane Melting Furnace Kit delivers serious value and doubles as a farrier forge. For electric-only setups, the TOAUTO TRF3000 melts copper in half the time of older 1400W models and the hexagonal base keeps things stable on your workbench.
For first-time casters, the most consistently recommended beginner furnace across Reddit’s r/MetalCasting and r/Metalfoundry communities is a 3-6KG propane unit like the TOAUTO 6KG V3. Start with aluminum, buy a pyrometer if your furnace doesn’t have one, and keep a sand bucket nearby. Once you’ve completed a few successful pours and know which metals you’ll work with most, you’ll have the experience to choose your next furnace with confidence. Whatever you pick, stay safe, work outdoors or with proper ventilation, and enjoy the cast.
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