Diamond Drill Bits, LepoHome 15 PCS Hollow Core Drill Bit Set for Ceramic, Glass, Porcelain Tile Diamond Hole Saw Tile Set Glass Drill Bit, 1/4 to 2 Inch

I bought these to put holes in some nice ceramic pots because my schlumbergera (Christmas cactus) and spider plants were getting BIG and I needed big pots with drainage, I had some big ceramic pots with no holes in them, and these drill bits were cheaper than buying new big pots. I had never used a diamond bit before.I don't know if diamond drill bits are supposed to stay on course, or if the wobbling was due to the fact that I didn't know how to properly use them. The holes might have a little shelf here and there. But these bits put holes in the bottoms of my ceramic pots just fine using my Craftsman electric drill. The pots did not break. And I am very happy with them. I did wear my kid's chemistry class goggles, and am glad that I did so.

This product worked perfectly! I was able to put drainage holes in my ceramic pots. You have to start at an angle and press down to get a grip. It will jump a bit, but you have to start slow. Also, don’t forget to add a bit of water since it gets hot! Once it grips you can straighten up the bit and the hole will come out perfect.

I was able to use the drill bits to make drainage holes in my pots. Works great and easy to use. Only thing is I could not use the large bit since it did not fit in the drill, they are a little large. I did have to tap out some of the debris from the bit. I would recommend. Ladies if I can do it so can you. Look at YouTube for how to drill in a ceramic pot. Start 45 degree angle then move to upright position.

These are a great value for the money. Love the assortment of sizes.

I used these to make drain holes in flower pots & did a test on a glass pot. Just tilt when you start & it works like a charm.

This suited my needs for adding holes to ceramic pots. But I don’t believe the grit is real strong. It takes a long time to get through even a pot base that is not very thick after using a few times it seems like the grit is wearing off already for the price it seems to do the job.

Had a blast. Probably used it wrong. Be sure to use water on whatever “vase” you wanna add a down stem to keep it from shattering.

These just skid across the surface. These are very hard to use unless you can muscle it in at an angle, then go perpendicular. Not what I was hoping for at all.

excellent

I was nervous to try this (cutting a hole into a glass or ceramic item as I truly thought it would shatter and I would be cut. Okay so yeah safety precautions and watch videos on this first before trying. But I am very impressed with how well this went for me. I will post a pic at a later date

Good stuff. Cuts through porcelain like its nothing.

They did a great job of trimming some tiles, had to shape some tiles to fit and they worked out really good.

I used these to cut porcelain tiles. After cutting about 2-3 holes, they are bald. I used it slowly with water, so they dont heat up, but they still managed to get bald. I'm left with useless metal pieces now.