FP1: Lost Wax & Margination
After making use of ___________ to grasp die in thin layers, practice die spacer within
____mm of marked margin on grasp dies
die hardner/sealer
1mm
wax pattern fabrication: steps after transferring wax coping to running forged
1. Upload wax cones for fxl cusps
2. Upload marginal ridge outline
three. Wax up F and L contours into occlusion
4. Wax up triangular ridges
surrounding the wax sample with a fabric which can correctly replica its form and anatomic
features
making an investment
elimination of the wax pattern so that a mold is created into which the molten alloy can be
placed
burn out
introducing the molten alloy into the previously organized mildew
casting
what have to you attach the sprue former to?
Thick non-functional cusp (ML of #30)
what causes fins on casting?
-pattern too near end of ring
-dropped ring
-heating too rapidly
-liner flush with give up of ring
-immoderate casting pressure
what reasons short, rounded margins?
-pattern too far from end of ring
After making use of ___________ to grasp die in thin layers, practice die spacer within
____mm of marked margin on grasp dies
die hardner/sealer
1mm
wax pattern fabrication: steps after transferring wax coping to running forged
1. Upload wax cones for fxl cusps
2. Upload marginal ridge outline
three. Wax up F and L contours into occlusion
4. Wax up triangular ridges
surrounding the wax sample with a fabric which can correctly replica its form and anatomic
features
making an investment
elimination of the wax pattern so that a mold is created into which the molten alloy can be
placed
burn out
introducing the molten alloy into the previously organized mildew
casting
what have to you attach the sprue former to?
Thick non-functional cusp (ML of #30)
what causes fins on casting?
-pattern too near end of ring
-dropped ring
-heating too rapidly
-liner flush with give up of ring
-immoderate casting pressure
what reasons short, rounded margins?
-pattern too far from end of ring
