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This was my first time to cut glass, and this product works great. I would recommend this to anyone.
I purchased these drill its to make 1/2" holes in glass bricks & bottles so that my wife could put small Christmas lights inside as a holiday decoration. They work well but since there is no centering bit it would be very difficult to start a hole with a hand drill. fortunately I had access to a portable drill press so they worked quite easily. As a caveat, you should go slow with a minimum of pressure and be sure to use water to cool and lubricate as you drill.
Great product for a good price. No problem drilling through tile. The smaller sizes (e.g., 1/4", 5/16", & 3/8") do not have any means of clearing the flute of debris, whereas other hole saws have openings for just such a purpose. This is the only reason I rate this product a 4 rather than 5; otherwise, a great product that I'd recommend to anyone who needs to drill through ceramic tile.
Bought the set to drill a hole in 3/4 thick granite countertop to install an undercounter water filter system. Was worried that I needed a much more expensive tool, but it worked like a charm, cutting the hole in less than five minutes of drilling. I kept the bit wet with a sprayer, and used the tip from another poster to clamp a board over the spot and use it as a drill guide. Not sure whether I will need the rest of the bits, but is a nice tool to have handy in the future.
I also wanted to save all of the labels on the bottle, so I minimized the amount of water used. Once the hole is started it is fine.
Unlike the other reviewers I used a wood clamp to hold the bottle on my Drill press. I ordered these hole saws because I wanted to convert a Wine bottle into a lamp.
The hole saw worked well in this application.The problem with using a hole saw without an Arbor is that it will "Wander" and not make a clean initial cut. It is recommended to use them at 300 RPM, but my drill press only goes down to 500.
I used a small water spritster to wet the area and occasionally add water to the cut. That is why I used the clamp and drill press.
I did also cover the labels with shrink wrap and masking tape to protect them from accidental water damage.
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