I bought some pots from the dollar store with no drainage holes. I keep the plants in a nursery pot and use the ceramic pot as a cachepot. Some seedling pots don't fit in a planter and I didn't want to buy a bunch of expensive pots that they would just outgrow. I'm by no means handy, but I was able to drill 14 pots! I have tested 3 different sizes of drill bits and although I have completed my project I am wondering how long each one will last as the smallest one broke after only drilling 3 holes. Here's what I used: 1) Drill and bits 2) A cork pad to put under the pot 3) Water 4) Helper to hold the pot (optional). Place the drill in the drill. Place the pot upside down on a cork cushion. Place a small puddle of water on the pot and have a helper hold it. Slowly drill a groove in the center of the pot at a 45 degree angle. It may slip when you first do it like I did, but once you feel it "hits the groove" you can drill a little faster to make the groove a little deeper with that it doesn't slip. Stop drilling, straighten the drill bit and center it over the pot. Drill again at high speed and push until you get a hole. For the 14 pots I made I feel I got a good deal, although the 3 pieces I would use the most might not last long. I recommend it. Update: 04/26/2021. I tried the "stone" hole saw, which is 100 times better for drilling pots. It was much easier, took less time, didn't need another person's help, the pit was cleaner, no shavings, seems to last longer, and it was cement, terracotta, and ceramic pots. Had to downgrade this review from 4 to 2 stars for comparison.