I’ve just bought a new printer about a week ago. I have the model Prusa I3 Sunhokey. I have got the problem that about 20 minutes into the print my print sort of slips off the heated bed (which is at 70 degrees celcius when i print PLA). This means that the print gets ruined.
I have already leveling the bed and practically tried everything and i dont know what to do!
please help!
SOC3D
2
What is the bed surface? What is your first layer temp and fan setting? What layer height. What method did you use to level the first layer. Etc…
Bed surface is aluminium
Print nozzle is at 210 degrees celcius
layer height at 0,2 mm
And for leveling the first layer i used an index card after a tutorial on youtube
the problem is though that the cornors of my builds starts to bend upwards thereby rising from the heated bed!!
then check your adhesion, use locally sourced glue stick to treat the bed, or use print bed tape;
might be the problem
SOC3D
5
Printing directly on aluminum as mentioned isn’t a great idea. Try tape or glue. Index cards are quite thick for leveling your bed, try plain paper. What is your first layer height and fan setting? Also it the bed heated ?
Mirth
6
Try PVA wash. I’ve literally had to take pliers to some of my prints to get them off, the adhesion was that good.
first level the bed, and i mean with a spirit level. Level the y axis carraige rods with the stepper motors disengaged. then level the bed as per instructions in the manual. if you can see from the pictures a have a floated 5mm glass plt.permenatly(ish) stuck to the mat supplied by hairspray heated clipped and the allow 1 day to completely cool. no need for nasty bulldog clips then :-0 For ALL pla keep the heat bed at 60, changeing it manually if your program says otherwise, do not print in a draft. if not using rafts as i dont then keep base layers solid and keep the heat in the plastic anything up to 225. if doing fine details though you will have to lower your extruder temps vor they will “run”. I have not had to use anything in pla to stick the PLA down yet while using glass layer. If you do use glass make manual dummy run first with motors off. dont want to burn out the beutys yet do we. 
Well i found that printing with a brim around the objects helped a lot and i haven’t encountered the problem ever since
