When I drill my acrylic, I use a very small but to start, and go a lil bigger each time until I reCh the desired size. That way there are no chips, and the holes are nice n clean
If you don't have various bit sizes for acrylic, i've always taped the spot to drill to prevent chips and cracks. Unless I've goofed drilling the hole i have yet to have one come out with a flaw.
Other tips for drilling acrylic
- Safety! Goggles or face shield, never wear gloves as they may get caught.
- Make sure the drill bit is very sharp, acrylic bits are best or metal bits if you can't get acrylic, you can sharpen or hone them with a fine file or emery cloth. When i was making cases for some of my collections i'd have a few bits set aside that i used for only acrylic to keep from dulling them and ruining my acrylic project.
- never use a wood bit, they're too dull and will ruin the acrylic with cracks and chipping.
- Practice! Use a scrap piece and get comfy with the speed and pressure needed to prevent chipping and cracks.