Standard metal drill bits will work but without extensive modification the metal drill bit will crack and chip the brittle acrylic sheet.
Drilling holes in acrylic sheets.
Drilling holes in acrylic requires the use of a drill bit specially designed for use with plastics.
Before you start drilling you ought to place a barrier below the plexiglass.
Drilling large holes to drill a hole in acrylite sheet greater than 1 25 4 mm a circle cutter may be used.
Ensure you go slow stop often to cool the drill and always support the sheet.
This barrier may be a piece of wood that you would not mind drilling into.
This barrier will help avoid cracking of the sheet when drilling the final hole.
If this is not the case the drill is too slow.
The tip must scrape the acrylic not gouge it.
Drilling holes in acrylic sheet place the drill perpendicular to the acrylic sheet and set the drill to medium speed immediately.
The cutter bit must also be modified to accommodate the material properties of acrylic.
It is possible to drill acrylic with regular metal drill bits.
Press only lightly on the drill the drill must sink itself through the material.