I don't think preheating or cold shuts would come into play, Tim.
With 158-190 degree melt, it should be easy to just flow it in until a ascribed line is met.
Roy's link says it shrinks as-first cooling so removing should be a snap. It also says original size will eventually come back.
Hardest part about making wedges for me is getting the taper. I figure about 4 bars with popular thicknesses/angles would give some wide choices. Taper would be done or close.
Drilling the hole where you want and trimming around the edges to fit has to be done anyway. Any big waste would go back in next time..