Damaged smooth sheet  

RE: Damaged smooth sheet

I have a smooth sheet which has a few sections of the coating torn off as well.  I just flip it over and use it as is.  I've had no issues with Z calibration.

I'll often use the bad side for small prints.

RE: Damaged smooth sheet

@jsw

Great to hear 👍! So it doesn't put your on the heatbed? I am worried about glue sticking to the heatbed and possibly ruining that too. Don't want to make a problem worse. 

RE: Damaged smooth sheet

If the hole is small enough, you can fill it in with gluestick. I patched a larger hole with blue painter's tape until I could apply a replacement PEI sheet.

Don't worry too much about a small hole hurting the heated bed underneath. If you were scraping the heated bed with bare metal, it would be a concern. 

You can replace the PEI but it is messy. Buying a replacement sheet with PEI pre-applied might be worth it. Meanwhile, that damaged side is good for PETG and sticky prints with unknown filaments.

RE: Damaged smooth sheet

Posted by: @shags72

I tore a .5", 13mm, diameter hole in my factory sheet. What, if anything, do I have to cover this hole up with when I flip it and use the other side? I assume there is some type of glue that was holding the sheet on the steel base. Thanks

Such damages I rub off briefly with a 1200 sandpaper and stick a thin Kapton foil over it. The foil is only a few hundredths of a mm thick and does not irritate the printing process.

RE: Damaged smooth sheet

@bobstro

Thanks for your reply and advice! I will just go ahead and keep using it like you said and keep PETG on that side using glue stick from now on and I could avoid the spot on PLA but it is just  off center so hard to miss with bigger prints

@karl-herbert

Thanks for your idea too! I will see if I can get some of that local.