Tooltos 2.5 inch Perforated Stainless Steel Casting Flask Flanged Vacuum Mold
- 106 in stock
Description
Key Selling Points
- 304 stainless steel construction withstands repeated high-temperature burnout cycles without warping or degrading — suitable for daily production use
- Flanged rim design creates an airtight seal with the vacuum casting machine — maintains consistent vacuum pressure throughout the investment pour
- Strategic perforation pattern allows vacuum to draw air from the investment uniformly — reduces air pocket formation that causes porosity in finished castings
- Available in 6 heights (3, 4, 5, 6, 7, and 8 inches) with the same 2.5 inch (64mm) diameter — choose the height that matches your wax tree size and project volume
- Includes rubber base — seals the bottom of the flask during investment pour and vacuum operation
- Smooth interior surface cleans quickly after burnout — ready for the next casting session without extended preparation time
About This Flask
The casting flask is the container that holds your wax tree and investment during the lost wax casting process. The flask diameter determines how many pieces you can cast in a single run and how large those pieces can be. The 2.5 inch diameter is a mid-size option — larger than 1.5 inch flasks used for single small pieces, and more precise than 3.5 inch flasks used for high-volume production. It is well suited for casting 2-4 rings simultaneously, medium pendants, earring sets, and bracelet components.
The perforations and flanged design are the two features that distinguish this flask from a plain cylinder. The perforations allow the vacuum to act on the investment from the sides of the flask, not just the top, which produces more uniform air removal and reduces the risk of porosity. The flanged rim provides a positive seal surface against the vacuum machine plate, which is necessary for maintaining the vacuum pressure required for bubble-free investment.
Height Selection Guide
| Height | Best For | Typical Projects |
|---|---|---|
| 3 inch (76mm) | Small pendants, 1-2 rings | Delicate and small-scale jewelry pieces |
| 4 inch (102mm) | Medium pendants, 2-3 rings | Standard ring and pendant production |
| 5 inch (127mm) | Medium pendants, 2-4 rings, earring sets | General jewelry production, most common choice |
| 6 inch (152mm) | Large pendants, 3-4 rings, bracelet components | Batch production and statement pieces |
| 7 inch (178mm) | Multiple pieces, taller wax trees | Production runs and complex wax assemblies |
| 8 inch (203mm) | Maximum capacity, large wax trees | High-volume production runs |
Best For / Not For
| Best For | Not For |
|---|---|
| Lost wax vacuum investment casting of gold, silver, platinum, brass, and bronze jewelry | Centrifugal casting — this flask is designed for vacuum casting systems, not centrifugal machines |
| Jewelry studios casting rings, pendants, earrings, and bracelet components in batch runs | Pieces wider than 2.5 inches — the flask diameter limits the maximum wax tree width |
| Workshops using standard vacuum casting machines with 2L-6L capacity | Investment powder not included — must be sourced separately |
Technical Specifications
| Material | 304 stainless steel body, rubber base |
| Flask Diameter | 2.5 inch (64mm) |
| Available Heights | 3, 4, 5, 6, 7, 8 inch (76, 102, 127, 152, 178, 203mm) |
| Weight | 440g (15.5 oz) |
| Rim Design | Flanged for airtight vacuum seal |
| Perforation Pattern | Strategic placement for uniform vacuum flow |
| Compatible Metals | Gold, silver, platinum, brass, bronze |
Pro Tips
- For ring production, arrange wax models in a circular pattern around the sprue base — the 2.5 inch diameter accommodates 2-4 rings depending on ring size, with metal flow paths of similar length to each piece for even fill.
- Pre-warm the flask slightly before pouring investment — a cold flask can cause the investment to set unevenly near the flask wall, which affects surface quality on the finished casting.
- Clean the perforations after each use with a small brush or compressed air before the investment residue hardens — blocked perforations reduce vacuum flow in subsequent castings.
- Store the flask with the rubber base attached to prevent dust and debris from accumulating in the perforations between casting sessions.
- Choose the shortest flask height that accommodates your wax tree — using a taller flask than necessary increases investment consumption without improving casting quality.
Frequently Asked Questions
What size projects is the 2.5 inch flask best for?
The 2.5 inch diameter is suited for medium-scale jewelry production — rings (2-4 pieces per flask), medium pendants, earring sets, and bracelet components. For single small pieces, a 1.5 inch flask uses less investment. For high-volume production with larger wax trees, a 3.5 inch flask provides more capacity.
How do I choose the right height?
Choose the height based on your wax tree height plus approximately 1 inch of clearance above the top of the tree. The tree should not touch the top of the flask. For most ring production, 4-5 inch height is sufficient. For taller trees or batch production, use 6-8 inch.
Is this compatible with standard vacuum casting machines?
Yes. The flanged design is compatible with standard vacuum casting machines with 2L to 6L capacity. Verify that your machine's flask plate accommodates a 2.5 inch flanged flask before ordering.
How do I clean the perforations after casting?
Use a small brush or compressed air to clear the perforations immediately after removing the investment, before the residue hardens. The 304 stainless steel will not corrode from investment contact or cleaning.
Can this flask be used for silver, gold, and platinum?
Yes. The 304 stainless steel construction handles all common jewelry casting metals including silver, gold, platinum, brass, and bronze at their respective casting temperatures.
What if I have questions after receiving the flask?
Contact the Tooltos team at sales@tooltos.com. We respond within 24 hours on business days and can assist with flask selection and casting setup questions.
What's Included
- 1 x Perforated stainless steel casting flask (2.5 inch diameter, height as selected)
- 1 x Rubber base
Support
Questions about flask size selection, vacuum machine compatibility, or order status? Contact the Tooltos team at sales@tooltos.com. We respond within 24 hours on business days.
