Sunday morning – time for a spot of @Josef_Prusa i3 MK2 printer maintenance.
I now understand a lot more about the PEI bed and ABS, PETG, TPU and so on so the next PEI sheet should fare a lot better!
I did it twice and feel the smell of lemonensol forever. 
nice
I must admit my subconscious keeps suggesting we bake a lemon meringue pie this afternoon…
I was surprised just how much glue there was to remove – perhaps it soaks up the solvent and turns into a much larger volume of gel?
missing/deleted image from Google+
If it has a heated bed, you crank the bed temp to 100c the built surfaces peal right up and doesn’t leave as much of the jel glue crap on the bed
Tough Sunday morning
Next time do it with the bed at temp. The glue is a lot softer like that.
Thanks for the comments re. hot bed and doing it without removing the bed. That’s what I love about this group – I so often learn something after posting about something I’m doing.
Next time I’ll do it on the printer, with the bed wound up as far as possible – normally you shouldn’t go above (I think it’s) 110C as the glue starts to break down, but in this case that’s exactly what’s needed. Sound sensible?
As an aside – removing ABS print jobs when I’ve had to use a bit of ABS slurry to keep it on the bed (so that’s wide-ish, high-infill jobs for example). What’s the best bed temp for removing them?
Allowing it to cool, then raising the bed back up to 100C works really well, but I suspect it tends to pull the PEI off the bed as I slide the removal tool under the print job – I eventually end up with bubbles under the PEI. No heat results in damage to the PEI if the job is even slightly too stuck.
Would 90C be a good compromise?
It really is as-new after replacing the PEI. Pity the next calibration buried the head into the right-hand-side of the bed and ground out a groove 
Fixed now, but the groove remains of course.
https://plus.google.com/photos/110418319904138520152/albums/6464431110284279521/6464431110857890258
that’s the same thing that happened to me. Nice new beautifully applied build surface, followed by marring the shit out of it with the print head…
@Justin_harder Uhuh. Painful 