What is Reddit's opinion of 1/2 inch Diamond Drill Bit Ceramic Porcelain Tile Glass Bottle Quartz Granite Countertop RO Water Filter Faucet Hole 0.50 Inch Single Pack?

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A diamond hole bit will fix that. I use one (½") I got several years ago, and it's still going strong after more than 50 holes. I like to use mugs, teacups, and other assorted pottery for my plants. Thrift stores and yard sales provide the materials. There are plenty of YouTube videos to demonstrate technique. Basically use water to lubricate and cool. Start at an angle. Take your time.

1/2 inch Diamond Drill Bit Ceramic Porcelain Tile Glass Bottle Quartz Granite 0.50 Inch Single Pack https://www.amazon.com/dp/B010W1KZL0/ref=cm_sw_r_apan_glt_i_978BKNR9J55YQ93KVNW4

A diamond hole bit will fix that. I use one (½") I got several years ago, and it's still going strong after more than 50 holes. I like to use mugs, teacups, and other assorted pottery for my plants. Thrift stores and yard sales provide the materials. There are plenty of YouTube videos to demonstrate technique. Basically use water to lubricate and cool. Start at an angle. Take your time.

1/2 inch Diamond Drill Bit Ceramic Porcelain Tile Glass Bottle Quartz Granite 0.50 Inch Single Pack https://www.amazon.com/dp/B010W1KZL0/ref=cm_sw_r_apan_glt_i_978BKNR9J55YQ93KVNW4

Buy an inexpensive 1/2" diamond hole bit on Amazon. There are tons of YouTube videos to show how to do it. Don't put rocks at the bottom. Mix perlite and succulent/cactus soil together. Water when the plant shows signs of thirst,then water until it runs from the drainage hole.

1/2 inch Diamond Drill Bit Ceramic Porcelain Tile Glass Bottle Quartz Granite 0.50 Inch Single Pack https://www.amazon.com/dp/B010W1KZL0/ref=cm_sw_r_apan_glt_fabc_6VV73JH4NM5HFQYKATQC

This! Make the plywood big enough you can clamp it securely to an edge, and you are good to go. Use 1/2 - 3/4 inch thick material so there is little chance of bouncing out of the guide hole.

I would use a low speed hollow core diamond bit with water instead of solid bit. You are physically cutting away less stone, and going slow and keeping it from overheating with the water.

Here is an example (one of many) - https://www.amazon.com/Drilax174-Diamond-Granite-Porcelain-Bathroom/dp/B010W1KZL0

Then have a helper spray water with a spray bottle as you cut.

 

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