How-to Sea ~ Glass Earrings Martha Stewart ~ Drilling holes in sea glass. Use Silly Putty to anchor the glass in, that way you dont slip and drill your finger. Also you will feel the glass "give" into the putty & know that you are all the way through!
How to Drill Through Glass Infographic by Eternal Tools. 4 easy illustrated steps for use when drilling through sea glass, beach glass and fused glass. The principle is the same no matter what glass you need to drill through (except tempered glass)