Melting tips

Can an Electric Melting Furnace Smelt Ore? Melting vs. Reduction Explained

Quick answer A compact electric resistance melting furnace is normally intended to remelt known metal, not extract me...

Operator pouring molten metal from a crucible into a multi-cavity mold beside a ToAuto furnace

Why Graphite Crucibles Crack—and When to Replace One

Diagnose graphite crucible cracks by pattern and process. Learn the roles of thermal shock, moisture, wedged charge, tong pressure, oxidation, flux, and wear.

Electric Melting Furnace Trips a Breaker: A Safe Diagnostic Path

If an electric melting furnace trips a breaker or GFCI, stop repeated resets. Use trip timing, nameplate load, cord condition, and qualified testing to narrow the cause safely.

3 kg electronic gold melting furnace pouring molten metal into a graphite ingot mold

3 kg Crucible Capacity Explained: Aluminum, Copper, Silver, and Gold

A 3 kg crucible does not hold 3 kg of every metal. Learn how reference metal, density, freeboard, charge shape, and mold demand determine usable capacity.

ToAuto electric melting furnace displaying 1200°C with crucible, molds, and metal materials arranged beside it

Metal Melting Furnace Kit Checklist: What You Need Beyond the Furnace

Audit a metal melting furnace kit before buying: furnace, crucible, tongs, mold, electrical fit, ventilation, PPE, spares, and the items bundles often omit.

Molten metal being poured from a crucible beside an open ToAuto electric melting furnace

Casting Furnace Buying Guide: Match the Furnace to the Metal, Batch, and Power

Choose a casting furnace by metal, real batch volume, temperature headroom, power supply, crucible fit, and production pace—not by a kilogram label alone.

Small ToAuto electric melting furnace operating beside a glowing crucible on a workshop bench

Furnace Reaches Temperature but Metal Won't Melt: A Practical Checklist

Use this practical checklist when an electric melting furnace reaches its set point but the charge remains partly solid or pours poorly.

ToAuto melting furnace labeled 2000°F beside molten metal pouring into a mold

Smelter vs. Furnace vs. Forge vs. Kiln: What Each Tool Actually Does

Understand the practical difference between a smelter, melting furnace, forge, and kiln so you can choose equipment by process instead of product labels.