TAP PlasDrill Bits


Standard twist drill bits will chip and crack the acrylic. High-speed steel TAP PlasDrill Bits have sharper tips and cutting edges specially ground to produce clean, chip-free holes in acrylic and many other sheet plastics. To prevent dulling, use PlasDrill Bits only to drill plastic.

When drilling plastics:
  • Support the plastic on a rigid surface, e.g., scrap plastic or wood.
  • Avoid drilling holes closer than 1/4" from the edge of the piece.
  • Drill holes oversize to allow for expansion and contraction of plastic. 
When drilling holes to support sheet by point fastening, two rules apply. First, the bolt hole diameter should be at least two times the diameter of the bolt. The larger diameter allows for adequate clearance for thermal and moisture expansion and contraction. Second, the distance from the hole center to the edge of the sheet should be at least 1.5 times the drilled hole's diameter. Please see the picture for a detailed diagram.


 
Size
Cutting Edge Length
Shank
Overall Length
Point
Rake
1/8"
 
1-1/2"
1/8"
2 -3/4"
60º
0
5/32"
1-7/8"
5/32"
3-1/8"
60º
0
3/6"
2"
3/16"
3-7/16"
60º
0
1/4"
2-1/2"
1/4"
4"
60º
0
5/16"
1-3/4"
1/4"
3-3/4"
60º
0
3/8"
2-1/4"
1/4"
4-3/8"
60º
0
7/16"
2-1/2"
1/4"
4-3/4"
60º
0
1/2"
2-9/16"
1/4"
5-1/8"
60º
0

Click here for tips on how to drill plastic.

TAP Video: TAP PlasDrill Bits