I bought a PEI sheet from McMaster Carr that's about 1 mm thick. I can't seem to keep it flat on the glass bed with just binder clips, since the middle part seems to curve up. Is there any way to keep the sheet flat with just binder clips, or do I have to buy some spray adhesive?
Posted Mar 24, 2016, 4:18 PM UTC
I had to glue mine down to get it to lay flat.
I'm going to have to agree with Puff, I tried the same thing with binder clips, but I could not get it to stay flat. Even tried putting my glass sheet in between the aluminum and the PEI sheet to make sure it wasn't just the aluminum bed bulging up. I messed with it for about 10 hours last weekend, I had to take it off until I get a mounting sheet to attach it to my glass sheet.
Spray no good. You need 3M high-temperature double-sided tape. trust me, nothing else works. Don't waste your time.
+1 on PuffThePed. 3m 468M is popular and works well.
Yep, the only known alternative is to get a thicker sheet that doesn't bend.
Just got the tape, should I heat up the bed and pei before putting the tape on or is it fine to do it cold?
Donno