If you drill your own glass blocks, you will need to clean out the glass dust. Following are some suggestions for ways to clean your blocks.
Try using rice and water shaken around in the block to clean it out. Then simply empty out the rice, rinse, and let the block air dry.
Another method that works well is to use an empty toilet paper roll attached to the end of your vacuum hose. Bend the unattached end into a cone shape and insert and tape a drinking straw to the cone. Put the straw inside the block and suck out the dust.
Finally, just wash each one with hot water "no soap", immediately after drilling and turn them hole side down in a dish drainer. Washing this quickly will not allow the glass dust to dry inside. They just sparkle when you are done.
Will a 10 inch drill press work for drilling holes in glass blocks for Christmas decorations?
Has anyone made glass block luminaries? If so, how do you drill the hole in the side of the glass block? Any tips?
When making the lighted glass blocks, are the diamond bits round like a hole saw? Can a 3/4 size work? We have made some but have used a bit shaped like an arrow head.