Glass bed clamshell chip

It is easy to just glue back that broken piece and put another piece of glass bed on top of that. I use double sided tape in between, other people likes to use paper clip to immobilize the top glass. adjustment in z-offset or start-gcode is needed to compensate the extra height.

It is possible to remove the old broken piece of glass after heat up, but it will not be easy. bed heat up may be slightly slower after addition of another glass, it is recommended to preheat the heated bed in advance before start printing.

Thanks for that, I have ordered a new bed, but I will also order and add some tempered glass to the existing bed as a spare. as I am sure its going to happen again.

thanks for that, to get the bed height correct I am thinking that before removing the old one, I will set the printer on a test print and than as if adjusting the nozzle to bed height, I will stop the printer, move the nozzle out of the way, then replace the bed, adjusting the new bed as if setting the nozzle height with a piece of paper. this should get the bed at approximately the correct height before I  run the printer, the machine will then be set to do another test print, and the adjustment repeated with the bed hot.

This is what I am planning to do with mine, I have found a source for borosilicate glass in 3mm, but cut to size (210 x 210) its £26 - half the cost of a new bed, they do have some ready cut pieces 200 x 213 for £10, so I am going to check to see if this will fit so that I can put it on the old bed as a spare. I may get 2 pieces to give me another for when this new bed cracks.
The way this has clamshelled and cracked, my old bed is also real glass (as I used to work in the double glazing industry I should know) that and I had to use a diamond file to remove the chips from the print I had done (it was still well attached).
the only thing I wondered was whether to bed the new glass to the old with an ABS slurry, or maybe use some thermal paste between the two?

UPS tried to deliver the new bed to me yesterday while I was at work, then dropped it off at one of their local pickup centres (a newsagents), I was lucky, when I checked their opening times I was able to pick it up on the way to work at 6 am (he had been open since 5.15am this morning). upon checking the package two of the mounting posts were slightly out of alignment, but they bent back to shape quite easily. looking forward to fitting this tonight.

It is not good idea to have the bed spring too tight. You will have bed leveling issue in the furture. Try compensate the increase in bed height with z-offset or raise the z-axis endstop.

Having measured the bed, I can go with the cheaper 200 x 213mm glass, I lose 10mm off the width of the bed, but there is a little leeway for the extra 3mm between the screw fixings on the length (at a pinch I could diamond file a nick to clear the screw threads)