You never need holes in a
Home › Forums › Glass Fusing › General Fusing Discussion › Molds – Hole Versus No Hole › You never need holes in a
August 13, 2011 at 8:56 pm #12176
Inactive
You never need holes in a draping mold. You often, but not always, need holes in slumping molds.
Holes allow air, that would otherwise be trapped, to escape from between the glass and the mold. That air expands during the firing and makes it more difficult for the glass to drop.
Very shallow molds usually do not require holes.
If you have a choice, take the holes. They won’t hurt anything even if they end up being unnecessary.
Paul
FusedGlass.Org
Helios Kiln Glass Studio
PaulTarlow.com