A vacuum system can improve lost-wax casting preparation, but it is not a complete casting studio in one box. Map the workflow first: wax model, investment, degassing, burnout, melting, vacuum-assisted casting and finishing.
This guide uses the Tooltos 2L Jewelry Vacuum Investing and Casting Machine as a reference point.
At a Glance
- 2L chamber with integrated 3 CFM oil-sealed pump and pressure gauge
- Accepts flasks up to 4 × 7 in; includes a 3.5 × 4 in perforated stainless-steel flask
- 580 × 310 × 582 mm (approx. 22.8 × 12.2 × 22.9 in), 32 kg (approx. 70.5 lb)
- Offered in 110V and 220V versions
Start With the Job the Machine Actually Does
A vacuum investing and casting machine removes trapped air from investment material and flasks, then supports vacuum-assisted casting with compatible flasks. It does not melt metal or burn out wax.
Choose Flask Size Before Pump Capacity
The flask is the physical limit behind most small-studio decisions. The 2L Tooltos machine accepts flasks up to 4 × 7 inches and includes a 3.5 × 4 inch perforated stainless-steel flask. It suits rings, pendants and small custom batches.
Measure the flasks you actually use, including clearance for gaskets and tongs. Do not select a machine from a pump number alone.
Match Capacity to Your Casting Rhythm
For custom pieces or small repeat runs, a compact 2L system is often the sensible starting point. Its integrated 3 CFM pump avoids a separate external-pump purchase. Move to 4L when your work needs more capacity; consider 6L for frequent casting, larger flask requirements, classes or small production batches.
Check the Whole Bench Footprint
The 2L Tooltos unit measures 580 × 310 × 582 mm (approx. 22.8 × 12.2 × 22.9 in) and weighs 32 kg (approx. 70.5 lb). Give it a stable, level position with room to lift the acrylic hood and reach controls. Keep a clear path between investing, burnout and pouring areas.
Understand the Vacuum System and Maintenance
The built-in 2L pump is rated at 3 CFM and has a pressure gauge. It is oil-sealed, not oil-free: vacuum oil is required before first use and is not included. Follow the oil-level indicator and supplied maintenance instructions.
Build a Compatible Casting Workflow
The sequence is: prepare wax work, mix and invest, vacuum-degas, complete burnout in a separate furnace, melt metal in compatible equipment, then perform vacuum-assisted casting with suitable flasks. Plan flask sizes, investment tools, furnace, melting equipment, tongs, PPE, ventilation and a heat-resistant area together.
A Quick Decision Check
Choose a compact 2L vacuum investing and casting system if you make small jewelry batches, use flasks within its 4 × 7 inch limit and want an integrated pump. Step up to 4L or 6L only when larger capacity, frequent cycles or teaching and production demands make the extra footprint worthwhile.
The Tooltos 2L Jewelry Vacuum Investing and Casting Machine is a focused tool for vacuum investing and vacuum-assisted casting preparation. It is not a melting furnace, a burnout kiln or an oil-free pump. Choosing with those boundaries in mind produces a safer, more complete small-studio setup.
If you have questions about matching a vacuum investing and casting machine to your studio, contact the Tooltos team at sales@tooltos.com. The team responds within 24 hours on business days.
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