On 11/5/14, 5:48 PM, Mayayana wrote:
| The instructions written in graphics only, no words, on the backing
| sheet imply that I must make the hole through my Lexan sheet 3mm bigger
| than the screw I'm putting through the hole.
|
| Is that possible?
|
| Why? Maybe the reason doesn't apply to my situation.

It applies. Holes in plastic should always be bigger
because the expansion/contraction can make the sheet
buckle otherwise. By drilling larger holes you allow the
sheet some space. I usually use small washers so that
I can make bigger holes. Finish washers will also work
if it needs to look nice.


3mm seems like a lot for expansion/contraction. I wonder if it's to be
sure washers are used.