3+1KG(Double crucible) Electric Digital Melting Furnace
Sale price
$289.99
Regular price
$359.99
On Sale
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Product Details
Model: TGF3000-V1.1
Voltage: 110V
Max Temp: 1100°C (2100°F)
Power: 1800W
Dimensions: 10" W × 11.5" L × 12" H
Weight: 7.5 kg
Material: Heat-resistant metal
Melting Time: 30–45 mins
Use: Indoor home, studio, metal melting, Jewelry store
Key Features
- Easy-to-use system: Designed for total beginners—no gas, no flame, just plug and melt. This fast furnace melts gold, silver, or copper in 30–45 minutes at a stable 1100°C. Over 95% first-time success rate.
- Extended and Stable Base: 30% wider base and 25% lower center of gravity for unmatched stability. UL certified, with dual anti-scald handles and high-temp insulation mesh. Tested to reduce crucible tipping risk by 80%. No deformation even after long-term use.
- Multi-Size Crucible Combination: Includes 1kg and 3kg high-purity graphite crucibles plus 5-in-1 moulds. Melts gold, silver, copper, aluminium, and more. Batch size is freely adjustable from 1Kg to 3kg. One set replaces multiple machines, boosting efficiency by 70%.
- 1400W PID Precision Temperature Control System: Temperature accuracy up to ±3°C, reaches 1100°C in 45 minutes, with a maximum temperature of 2000°F. Features automatic calibration and constant temperature maintenance, with a melting failure rate of less than 2%.
- 7-in-1 multi-functional melting kit: 7-in-1 kit includes main unit, 1kg & 3kg crucibles, 5-in-1 mould, gloves, lid, cord, and manual—no extras needed. New users complete full melt in under 2 hours on the first try.
1. Application & Basic Parameters
Q1: What metals can the TRF3000 resistance furnace melt?
A: The TRF3000 resistance furnace is designed for melting a wide range of metals, including:
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Aluminum
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Copper
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Silver
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Gold
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Lead
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Zinc
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Brass
It delivers excellent performance for aluminum and silver melting, handles small-batch copper melting reliably, and is especially suitable for gold melting and jewelry applications.
Ideal applications include:
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Hobby metal casting
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Jewelry making
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Scrap metal recycling
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Small-scale metal refining
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DIY metal projects
Q2: What are the capacity, power, and temperature specifications?
A: The TRF3000 features a flexible dual-crucible design:
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Crucible Capacity: 1KG + 3KG
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Power: 1800W
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Voltage: 110V
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Maximum Temperature: Approximately 1150°C
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Temperature Control: PID Digital Controller
The dual-crucible design allows users to select the appropriate crucible size based on different project requirements, improving flexibility and efficiency.
Q3: Is the TRF3000 beginner-friendly?
A: Yes. The TRF3000 is designed to be easy to use for beginners and experienced hobbyists.
The complete kit includes essential accessories, and the intuitive PID temperature controller makes operation simple.
Many users appreciate that it is:
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Ready to use out of the box
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Easier and cleaner than propane furnaces
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More convenient for home workshops
2. Heating Performance & Temperature Control
Q4: How fast does the TRF3000 heat up?
A: The furnace typically reaches operating temperature within 25-40 minutes, depending on the metal type, material quantity, and environmental conditions.
For copper melting, users typically report approximately 30-60 minutes, with better performance when the crucible is properly preheated.
Q5: Does the furnace provide stable temperature control?
A: Yes. The built-in PID controller provides precise temperature regulation and excellent heat retention.
Users frequently praise:
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Stable temperature holding
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Minimal temperature fluctuation
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Consistent melting performance
This makes the TRF3000 suitable for projects requiring better temperature control, such as jewelry making and small-scale refining.
Q6: What type of power supply is required?
A: Due to the 1800W power output, the TRF3000 requires:
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20A dedicated circuit
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12AWG heavy-duty extension cord
A standard 15A household outlet may cause breaker trips during operation.
3. Durability & Common Issues
Q7: How durable is the TRF3000 furnace?
A: The TRF3000 is designed for light-to-moderate hobby use and provides reliable performance for regular melting projects.
Many users report long-term use of 6-12+ months with proper operation.
A major advantage is the responsive customer support, with many users receiving quick replacements or solutions for issues involving heating elements, probes, or components.
Q8: How long does the crucible last?
A: Crucible lifespan depends on the material being melted and operating temperature.
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Aluminum and silver: Longer service life with repeated use
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Copper and higher-temperature metals: Faster wear
For extended use:
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Keep spare crucibles available
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Apply borax coating when appropriate
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Avoid overheating or unnecessary high-temperature operation
Q9: What are the common problems and solutions?
A:
Breaker trips during operation: Use a dedicated 20A circuit and proper heavy-duty extension cord.
Switch or temperature probe issues: Contact customer support for troubleshooting and replacement assistance.
Temperature variation: Preheat the crucible and add metal gradually to maintain stable heating.
General maintenance: Proper operation and regular inspection can significantly extend product lifespan.
4. Accessories & Safety
Q10: Are the included accessories sufficient?
A: Yes. The TRF3000 comes with a complete accessory package, and the dual-crucible design is one of its biggest advantages.
For improved long-term use, users may consider adding:
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Higher-quality heat-resistant gloves
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Spare crucibles
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Borax flux
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Larger casting molds
Q11: Is the TRF3000 safe to use?
A: The electric resistance heating design provides stable operation without an open flame, making it cleaner and more convenient than propane-based furnaces.
However, molten metal reaches extremely high temperatures and requires strict safety precautions.
Always use:
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Heat-resistant gloves
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Eye protection or face shield
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Proper ventilation
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Stable heat-resistant work surface
Operate outdoors or in a well-ventilated garage whenever possible.
5. Customer Support & Buying Value
Q12: How is customer service?
A: Customer support is one of the strongest advantages of the TRF3000.
Many users report:
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Fast responses
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Replacement parts when needed
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Technical assistance during troubleshooting
Strong after-sales support helps users maintain a positive ownership experience.
Q13: Is the TRF3000 worth buying?
A: Yes. The TRF3000 offers excellent value for serious hobbyists looking for a versatile and reliable electric melting furnace.
Key advantages include:
✓ Wide metal compatibility
✓ Dual crucible flexibility (1KG + 3KG)
✓ Stable PID temperature control
✓ 1150°C maximum temperature
✓ Complete starter kit
✓ Strong customer support
It is especially suitable for:
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Jewelry makers
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Advanced hobby casters
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Small-scale refiners
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DIY metalworking enthusiasts
Compared with entry-level furnaces, the TRF3000 provides a better balance of performance, flexibility, and reliability.
Final Usage Recommendations
For the best melting results:
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Preheat the crucible before operation.
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Apply borax coating when appropriate.
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Use a dedicated 20A circuit.
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Use a 12AWG heavy-duty extension cord.
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Choose the correct crucible size based on your material quantity.
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Always wear proper personal protective equipment (PPE).
How do you Melt Steel Metal
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FAQ About Smelting Tools
Why does my crucible crack or the lid fall off after a few melting cycles?
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High-temperature cycling increases structural stress. Low-density or recycled graphite cracks within 5–10 melts. Our high-purity crucible is rated for 50–100 cycles. Early cracking usually means poor material quality, not user error.
Why does it take 60 minutes to melt copper while others only need 20 minutes?
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Real melting speed depends on actual wattage, insulation thickness, and temperature consistency. Some products claim “1400W” but deliver far less. A true 1400W+ furnace melts 300g copper in 20–25 minutes.
Will the furnace smoke, spark, or trigger GFCI during normal use?
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No. Smoke, sparks, and frequent GFCI trips indicate electrical or coil insulation faults. A proper furnace uses thick insulation, grounded chassis, GFCI protection, and overheat safeguards.
Will the pliers or molds break or be too small?
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Cheap pliers deform above 500°C. Good pliers must hold 1200°C red-hot crucibles safely. Molds under 100g capacity are impractical. A proper kit includes heat-resistant pliers and molds matching the crucible size.
Why do cheap furnaces become more expensive over time?
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Thin crucibles, weak insulation, and low-grade electronics wear out faster. Real cost includes power usage, consumables, and downtime — not just the purchase price. Durable systems lower long-term cost per kilogram.
Does “Max 1100°C” mean accurate temperature control?
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No. Max temperature ≠ stability. Many units swing ±50°C, causing oxidation and bubbles. A PID controller holds ±5°C accuracy, reducing defects by up to 75%.
How do I reduce carbon buildup inside the furnace?
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Carbon builds up when the inner lining is rough. A removable, smooth alumina lining allows quick wiping after each melt and prevents residue from hardening.
Are the instructions difficult for beginners?
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Beginners often skip steps like crucible preheating or grounding checks. If unclear, contact support or follow our video tutorials. The wrong operation can cause overheating or cracking.
Can I melt aluminum, silver, or gold?
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Yes. Use high-purity graphite crucibles and match temperatures. Avoid cross-contamination by dedicating one crucible per metal.
