Technique Instructions Powder to Liquid Ratio
SuperVest R.F. is suitable for both ring and ringless casting systems. This investment is specifically designed for all types of metal alloys and therefore dilution is required.
Non-Precious Alloys
60gm Powder-------13ml of Special Liquid + 3 ml of water
90gm Powder-------17 ml of Special Liquid + 6 ml of water
Semi-Precious and Precious Alloys
60gm Powder-------11 ml of Special Liquid + 5 ml of water
90gm Powder-------15 ml of Special Liquid + 8 ml of water
TO INCREASE EXPANSION, USE MORE SPECIAL LIQUID AND LESS WATER. TO GET LESS EXPANSION, USE LESS SPECIAL LIQUID AND MORE WATER. KEEP THE TOTAL VOLUME OF THE SOLUTION CONSTANT.
Mixing Instructions
For best results, liquid and powder should be used between 70-78°F. Incorporate powder into liquid and hand spatulate for 10 seconds. Let sit under vacuum without spatulation for 15 seconds. Mix for 90 second under vacuum. Let sit under vacuum without spatulation for an additional 15 seconds.
Rapid Fire Burnout
Allow the ring to bench set for 15-25 minutes depending on the size of the ring. The bigger the ring, the longer the bench set. After the bench set time, place the ring in the furnace at 1650°F for 40-60 minutes depending on the number of rings. Casting temperatures are: Non-Precious Alloy at 1650°F, Semi-Precious Alloy at 1550°F, and Precious Alloy at 1300°F.
SuperVest R.F. can be used in the normal burnout procedure where the bench set is overnight and the furnace comes on early in the morning and held at burnout for at least 1 hour before casting.
