Help Drilling Glass Blocks

I am trying to drill the glass blocks. I have the 1/2 inch diamond drill bit but it seems to be taking a lot if effort. I put it in water first but it heats up rather quickly.

Carrie from Canada


Help Drilling Glass Blocks

When using any kind of diamond drill bit, you don't just put water on it, but must keep the tip WET while drilling the hole the entire time. The water is what keeps the bit cool, and otherwise you'll ruin the diamond tip if it heats too much (and you'll never get through the block). Even with the water, it'll still heat up. Diamond bits come in several shapes and sizes too. Make sure that you the right one for the job--just because it's a diamond bit doesn't mean it's the right bit for the intended job. (10/04/2007)

By susanmajp

Help Drilling Glass Blocks

This is a slow process. I keep a bottle of antifreeze sitting close by to pour on the drill bit to cool it. I have been tempted to find a table drill to keep the constant pressure on the drill. Holding it makes my arms go numb. I don't know the purpose of the antifreeze, but most instruction suggest it. Another suggestion is use your Dremel with a small bit to start the hole then increase the size of the drill. i use tungsten bits from Lowe's. They are cheaper than the diamond ones. (10/06/2007)

By lzygranny

Help Drilling Glass Blocks

I order my diamond core drill bit from the internet. It is cylinder shaped, so it actually cuts a hole in the glass in about 3-5 minutes. Just remember to keep the drill bit wet, use moderate speed and pressure. I have used the arrow shaped diamond drill bit but it takes a very long time to drill a hole, plus blocks easily get overheated and break. (11/21/2007)

By cls45


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