Grumps wrote:
Hi

I have a need to screw into some sheets of acrylic. I have some 1/2" #6
screws. I believe this is 3.5mm in metric speak. But is that the hole size I
have to drill?
Ta.


Acrylic is very brittle and you should tap the holes for metal thread
screws. May be 5/32" whitworth use 1/8" drill or metric equivalent.