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New Curtains and Windows

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allanchrister:
Simple solution.  Don’t drill hole and screw, use adhesive sealant for polycarbonate as used in aircraft windshields and canopies. I think Sika make a suitable adhesive. Perfect for flat windows.

awemawson:
Allan I did consider that, and also self adhesive window channel but the problem is getting the sheets into place and fixing them while things set. Obviously the enclosure is rather full of machine and access is a bit of an issue.

allanchrister:
Understood Andrew.  No way of attaching them from the outside then?  I have used a Dremel on airplane canopies running a specially ground drill for poly which tends to melt the poly and ‘seals off’ the stress risers, and make the holes about 20-30% larger than the screw thread dia to allow for some movement. Do not tighten the screws too much and you should be OK. Could use a combination to attach them and remove the screws later??? And fill the holes with Sika.

Good Luck!!

allanchrister:
BTW Loctite and similar threadlockers can crack poly as well.

RussellT:
Rubber sucker handles might help with mounting from the outside.

Russell

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