PHYHOO JEWELRY TOOLS
PHYHOO 2L Jewelry Vacuum Casting Investment Machine | 375W 3 CFM Lost Wax Casting
PHYHOO 2L Jewelry Vacuum Casting Investment Machine | 375W 3 CFM Lost Wax Casting
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- 30 Days Returns/Exchange
- 12-Month Warranty
- Global Transportable
Professional 2L jewelry vacuum casting investment machine with 3 CFM dual-stage pump and spring-mounted investment table — eliminating air bubbles from investment molds for clean, porosity-free lost wax castings in jewelry studios and casting houses.
Key Selling Points
- 3 CFM Dual-Stage Deep-Draw Vacuum Pump — 2L pump capacity with EZ-Flow oil input delivers consistent, high-level vacuum for thorough air evacuation from investment molds, eliminating porosity at the source
- 11 x 11 Inch Spring-Mounted Investment Table — rubber pad surface with spring support provides vibration-assisted investing that dislodges trapped air pockets from the investment mix during the vacuum cycle
- Clear Acrylic Bell Jar 9 x 8 Inch — full visibility of the investing process without interrupting the vacuum seal, allowing real-time monitoring of bubble evacuation
- Multiple Flask Adapter Compatibility — includes 4 inch adapter plate, 3.5 inch adapter plate, and 4 inch solid wall flask adapter with 1/8 inch silicone gasket for broad flask size coverage
- High-Temperature Double-Lined Vacuum Hose — engineered for years of reliable, leak-free service under repeated thermal cycling in professional casting environments
- Dual Voltage 110V and 220V — compatible with workshops worldwide, no external converter required
About This Product
The PHYHOO 2L Vacuum Casting Investment Machine addresses the most common cause of failed jewelry castings: air bubbles trapped in the investment mold during the investing stage. The dual-stage vacuum pump draws air from the investment mix while the spring-mounted table provides mechanical vibration to dislodge bubbles that vacuum alone cannot remove, producing consistently dense, void-free investment molds.
The clear acrylic bell jar allows the operator to monitor bubble evacuation in real time and confirm complete degassing before the investment sets. The precision pressure gauge provides accurate vacuum level readings for repeatable results across every casting session. Suitable for professional jewelry studios, casting houses, and dental labs working with lost wax investment casting.
Flask Adapter Compatibility Guide
| Adapter Included | Compatible Flask Type |
|---|---|
| 4 inch adapter plate | Standard 4 inch open-back casting flasks |
| 3.5 inch adapter plate | Standard 3.5 inch open-back casting flasks |
| 4 inch solid wall flask adapter with 1/8 inch silicone gasket | Solid wall (non-perforated) 4 inch casting flasks |
Best For / Not For
| Best For | Not For |
|---|---|
| Professional jewelry studios and casting houses requiring bubble-free investment molds for lost wax casting | Users who have not sourced vacuum oil separately — the machine cannot operate without vacuum oil, which is not included |
| Dental labs performing investment work for prosthetic casting with standard 3.5 and 4 inch flasks | Centrifugal casting workflows — this machine is designed for vacuum investing only, not for centrifugal metal injection |
| Jewelers seeking to eliminate porosity and surface defects caused by air bubbles in the investment stage | Flask sizes outside 3.5 and 4 inch — verify your flask diameter against the included adapter sizes before ordering |
| Art casting and precious metal fabrication studios requiring a reliable, dual-voltage vacuum investing solution | Environments without adequate ventilation — the vacuum pump exhaust produces oil mist that requires proper airflow management during operation |
Technical Specifications
| Power Supply | 110V / 220V |
| Power Consumption | 375 W |
| Vacuum Pump Capacity | 2 L |
| Pump Flow Rate | 3 CFM |
| Pump Stages | Dual-stage deep-draw |
| Investment Table Size | 11 x 11 in (27.9 x 27.9 cm), rubber pad, spring-mounted |
| Acrylic Bell Jar (D x H) | 9 x 8 in (22.9 x 20.3 cm) |
| Adapter Plates Included | 4 in and 3.5 in |
| Machine Dimensions (W x D x H) | 58.4 x 27.9 x 35.6 cm (23 x 11 x 14 in) |
| Shipping Weight | 32 kg (70.5 lb) |
Pro Tips
- Add vacuum oil before first use and check the level before every session. Running the pump dry even briefly causes permanent damage to the pump internals. Use the oil type specified in the user manual and fill to the indicated level on the sight glass.
- Mix investment to the correct water-to-powder ratio before placing under vacuum. Over-watered investment degasses too quickly and may overflow the flask under vacuum. Under-watered investment sets before bubbles can fully evacuate. Follow the investment manufacturer's recommended ratio for your specific product.
- Place the flask on the investment table immediately after mixing and seal the bell jar without delay. Most gypsum-based investments begin setting within 8–10 minutes of mixing. Delayed vacuum application reduces the time available for complete bubble evacuation before the investment hardens.
- Monitor the pressure gauge and hold vacuum until bubbling stops completely. Visible bubbling through the bell jar indicates active air evacuation. Releasing vacuum before bubbling stops will leave residual air pockets in the investment, causing porosity in the finished casting.
- Inspect the silicone gasket and bell jar seal before each use. A worn or cracked gasket prevents the system from reaching full vacuum. Replace the gasket at the first sign of cracking, flattening, or vacuum loss during the investing cycle.
Frequently Asked Questions
Is vacuum oil included with the machine?
No. Vacuum oil is not included and must be purchased separately before first use. The machine will not operate without vacuum oil in the pump. Use the oil type specified in the user manual and fill to the correct level before starting the pump for the first time.
What flask sizes are compatible with the included adapters?
The machine includes a 4 inch adapter plate, a 3.5 inch adapter plate, and a 4 inch solid wall flask adapter with a 1/8 inch silicone gasket. These cover the most common casting flask sizes used in jewelry and dental lab work. Flask sizes outside this range are not supported by the included adapters.
Can this machine be used for centrifugal casting?
No. This machine is designed exclusively for vacuum investing — the process of degassing investment mix around a wax model before burnout. It is not a centrifugal casting machine and cannot be used for metal injection or centrifugal casting workflows.
How long should the investment be held under vacuum?
Hold the investment under vacuum until all visible bubbling through the bell jar has completely stopped, typically 1–3 minutes depending on the investment type and mix ratio. Releasing vacuum before bubbling stops will leave residual air in the mold. Always follow the investment manufacturer's recommended vacuum time for your specific product.
Is the machine compatible with both 110V and 220V power supplies?
Yes. The machine is available in both 110V and 220V configurations. Select the correct voltage variant for your region at the time of purchase. Do not connect a 110V unit to a 220V supply.
How do I get support or report an issue with my order?
Contact the PHYHOO team at phyhootool@gmail.com. We respond within 24 hours on business days.
What's Included
- 1x 2L Vacuum Casting Investment Machine (main unit)
- 1x Acrylic Bell Jar, 9 x 8 in (22.9 x 20.3 cm)
- 1x 4 inch Adapter Plate
- 1x 3.5 inch Adapter Plate
- 1x 4 inch Solid Wall Flask Adapter with 1/8 inch Silicone Gasket
- 1x User Manual
Support
Questions about this jewelry vacuum casting investment machine or order status? Contact the PHYHOO team at phyhootool@gmail.com. We respond within 24 hours on business days.
