Large Sand Casting Flask - Cast Iron, 4 Pins, 4" x 2.7" x 2.6"
The professional-grade two-part flask engineered for precision sand casting of jewelry, figurines, and more.
The Bench Basics Large Sand Casting Flask is purpose-built for artisans, jewelers, and hobbyists who demand accuracy, durability, and ease of use in every casting session. Machined from heavy-duty cast iron and finished in a matte black coating, this flask is designed to withstand the demands of repeated professional use while delivering consistently clean, detailed castings.
Specifications
| Specification | Detail |
|---|---|
| Each Half — Height | 4" |
| Each Half — Width | 2.7" |
| Each Half — Depth | 1.3" |
| Combined Depth | 2.6" |
| Total Sand Volume | 28.08 cubic inches (4" × 2.7" × 2.6") |
| Weight | 3.5 lbs |
| Alignment System | 4 precision pins with matching holes |
| Spout | Oversized square pour spout |
| Compatible Sands | Petrobond, Delft Clay, Castanova |
| Also Available As | XXL size |
Features
At the heart of this flask is a 4-pin alignment system with precision-machined pins and corresponding holes on each half, ensuring the cope and drag register perfectly every time you close the mold. This eliminates the guesswork and misalignment that can ruin a casting, giving you clean parting lines and accurate reproductions of even the finest surface details.
The oversized square spout is one of the standout design features of this flask. A larger pour opening reduces back-pressure during the pour, allows molten metal to flow smoothly and rapidly into the mold cavity, and minimizes turbulence that can cause porosity or incomplete fills — critical advantages when casting intricate jewelry pieces or detailed figurines.
With a combined interior volume of 28.08 cubic inches (4" tall × 2.7" wide × 2.6" deep), this flask holds a generous amount of casting sand, giving you ample working depth for most jewelry and small figurine applications. At 3.5 lbs, the solid cast iron construction provides the thermal mass and rigidity needed to keep your sand packed firmly in place during the pour.
This flask is fully compatible with the most popular oil-bonded and synthetic casting sands on the market, including Petrobond, Delft Clay, and Castanova, making it a versatile addition to any casting bench regardless of your preferred medium.
Whether you are producing one-of-a-kind custom rings, reproducing antique buttons, or casting small sculptural figurines, the Bench Basics Large Sand Casting Flask delivers the reliability and precision you need. For larger projects, the XXL version is also available.
What's Included
- 2-piece cast iron flask (cope and drag halves)
- 4 alignment pins pre-installed
Also available: XXL Sand Casting Flask for larger-scale casting projects.
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Express Shipping · United States: $3.99
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United States · Return window (days after delivery): 30. Return method: By mail. Return postage: Seller pays.
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