Fine Proofing Alloy, 1 LB Cake
FLEXBAR MACHINE CORPORATION
FINE PROOFING ALLOY 1 LB. CAKE
Growth after casting is +.0002" after 6 minutes. However, after 30 minutes the change is .0000 (zero), so that this is the best time for removal and inspection. After 1 hour and up to 21 days, the change is between .0001" and .0002" on the minus side.
USES: PROOFING VIA REPLICATION OF:
Dies - Moulds - Internal and External Thread Forms - Texture Check - Grooves-Slots - O-Ring Grooves - Gear Teeth - Splines - Surface Finish Replication - Extra-Fine Fixturing - Checking Undercuts
- Precision holding of irregular work pieces during machining.
- Dental-type model making.
- Drill bushings for drill jigs.
- Chucks for lens buffing - gem cutting.
- Transfer templates in contour jigs.
- Cores for electroforming.
- Compound wax patterns - lost wax patterns.
- Duplicating plastic. Facsimile or Plaster patterns.
- Fusible elements in safety devices and alarms.
- X-Ray (radio opaquing).
Material melts at 117° F so that you can heat it in a small pot or ladle either over a burner or in a double boiler (pot in a hot water bath). Pot can be stainless, porcelain lined or cast iron. Aluminum, brass, or copper vessels are not recommended. Thermostatically controlled melting pots are good.
- No separator or release agent is required.
- Molten alloy solidifies quickly. This can be hastened by placing in cold water or by using a fan. Using cold water or a fan for cooling produces a fine crystalline structure which is better for inspecting the surface finish. As alloy is used at such a low temperature there is no danger of affecting the temper of the work piece.
- Replica is then removed for inspection or for recording purposes. Replica casting is strong enough to be shipped anywhere.
- Removal of the alloy is accomplished in hot water or with a steambath. Chips that float to the top of the molten alloy are removed by skimming, leaving the alloy sufficiently clean to be reused.
- Block off vents with clay, tape or putty
- Create a reservoir barrier around the mold.
- Remove air pockets with a vacuum bell if available. Air bubbles may also be removed by puddling with a rod, as this will also permit molten alloy to flow into all areas.