I got my new screen from Mac 1 yesterday and tried to fit it today.

After a bit of sanding to make the profile fit, I marked the holes, rested it on my bench and stared to drill it.

On the second hole it went snap and split int
o two pieces.

Do you think I've been too rough with it - I didn't try to drill it particularly slowley as I thought it would be quite strong. It was a warm day today so it shoudn't have been brittle.

Could it have had a flaw that caused the crack, or have I just been a bit of a numpty?

It was only £30 so not the end of the world.

I haven't called Mac 1 yet, but will on Monday to see what they think.

Thanks

Stu

how close to the edge was the hole you were drilling?

1cm from the bottom, and at least 5cm from the side.

stu

Drill bit was too sharp.......it is the case when drilling polyc that a sharp drill is the wrong tool.
you use a dull bit and it doesnt try to screw its self into the plastic.

What sort of drill were you using, a standard 60° HSS generates too much torque on lexan (quite a high friction material). I think a wood drill or a spot drill (same principle) would do a better job as it cuts the outer circumference of the hole before removing the waste material

It was a normal HSS metal bit.


I'll try a wood one next time.

Stu

Doesnt sound like it was polycarb. In which case not a good idea for a screen.

- Jim

Give MAC1 a call (as you probably are) they are top blokes and am sure will help out as much they can!

Steve.