I'm trying to drill a hole in some 1/4 inch plastic using my old Makita drill, but it's not really doing much. I'm worried about generating heat and how it might affect the hole quality. Any tips on how to make this work better?
3 Answers
Good question about the type of plastic and the size of the hole! Generally, a sharp drill bit on low speed works wonders. If you need a bigger hole and what you have isn’t cutting it, you might have to look into step drill bits or other techniques.
Make sure you're using the right drill bit for plastic! A proper multi-purpose drill bit should cut through it easily. It also sounds like you might have the drill in reverse. Give that a check, because drilling in reverse is like trying to hammer a nail with a rubber mallet!
You're on the right track! A sharp drill bit is key, and drilling at a slower speed helps control heat. If heat builds up, it can mess with your edges, but using a deburring tool afterward will clean things up nicely. Just support the plastic properly so you can apply steady pressure without it shifting around.
What brand of deburring tool do you recommend?

Thanks! I'm new to using drills beyond drywall, so any pointers help. I think I might have accidentally had it in reverse.