Depends on the print. Really it’s just Newtonian physics. Taking a print off the bed is like pulling a table cloth out from under a fully set table. With the right amount of force you can make that print move away from the bed without the bed absorbing much force. When the force is properly placed between the part and the bed you don’t damage either.
If you have a removable bed pla prints pop themselves off after 2 minutes in the freezer, I use a use a very particular hairspray for bed adhesion with PLA.
As for abs, kapton tape is the way to go, a careful knock with a rubber hammer or if you can ease a chisel infer a corner that works wonders too.
Some good ideas on here I will have to try feeler gauges and dental floss
It was a kickstarter machine. After breaking my build plate I did a Y axis upgrade and decided to extend the bed. Used a dial indicator and got the Bed flatness to +/- 0.1 mm over whole surface . I played with adding the auto level and found that the head deflected the bed so much that auto level would not work well. So I came up with a new Z switch mount that works great. You can see it on the left. I trapped the Z axis Nuts with an antirotation follower and allow them to float. The switch senses off the floating nut so no more problems with the nuts loosing location if the head hangs up on a blob clinging to the extruder. The Z limit switch always trips. Added a knob to the set screw making it very easy to adjust. Been happy with how it works and I can make some fairly large stuff in one piece.
I have a Borosilicate glass and i work with closed hot bed. When i work with PLA, i use CUBE glue. When the work have finished, i removed the glass from 3d printer and remove the piece with water on the faucet.
Se il piano riscaldato è asportabile e hai usato lacca per capelli per l’adesione del primo layer immergilo in acqua calda e prova ad usare una spatola per colori ad olio per infilarti sotto il primo layer. Puoi provare anche con piano freddo a dare dei colpetti su di uno spigolo ed infilare una spatola tra il vetro e la stampa