T-glase tore glass out of my UM2 bed

[lance-greene 7]

so I was printing a cookie cutter for my mom with some red T-glase and when I removed it from the print bed it left some wierd marking which after touching them I realized were chunks of missing glass which are now imbedded in the cookie cutter i printed

the build plate was at 60 degrees

hotend at 240

no special adhesive surface, just straight glass.

when removing the print, i just squeezed the print a little bit and it snapped off. no rough housing or use of any tools.

I've printed 3 spools of t-glase so far and this has never happened, I'm at a loss for words.

[Labern 736]

Yeah this has happened to a few people using XT. I havent experienced it myself but it was happening quite a lot a while back.

Good thing the glass has 2 sides

[lance-greene 7]

but sadly the other side also has missing chunks out of it

[lance-greene 7]

why would something like this happen? is the filament sticking too strongly to the glass? it seems odd that I've printed multiple spools of this and it has never happened before

[lance-greene 7]

http://taulman3d.com/best-print-settings.html

looks like in this list of print settings for their material they mention that letting it cool to ambient temp before removing it is what can cause the issue. good to know.

[Labern 736]

Yeah I always try to leave my prints till they are ambient. I ended up with a spare glass anyway so I can just swap them if I want to do another print straight away.

[AreDigg 8]

Yeah I always try to leave my prints till they are ambient.

 

I believe this is what causes glas chipping.

[Labern 736]

it looks that way.

good thing i don't use T-Glase

[ultiarjan 1,176]

So it says to remove the print at 35c.

Interesting as this seems difficult to me. At least with XT I often had to put my glass in the fridge to get the print off.

[Labern 736]

the recommended bed temp is quite low at 45deg so I guess this would make it easier to get off