yes is warping and lift on the bed

i had same problem.warping when printing big things. 1 clean the glas using isopropyl 90 % 2 heat the nozzle 220 and the bed 60 temp 3level the bed use A4 paper check it atleast two times. 4print with a raft. 5print at a lower speed.raft half speed.

The correct bed tempature for ABS is 110 Celcius  for  Fahrenheit people that is 220  Fahrenheit.  but it is very hot.  if PETG is used the BED temp is 60 Celcius. if the day is humid I use 65 Celcius bed temp with PETG .  if you are printing ABS you need to put a box over the printer if your printer does not have an enclosure. do not DO NOT use the fan with ABS or PETG.  With these filaments including nylon filament using a fan causes warping and seperation. because I do not use that junk PLA I have removed the Fan from my printer.

hi nallycat

i didn know you could raise the temp so high? i am uploading a video . i post it here .maybe you can see if the raft is good and the video is useble.

yes with ABS i turn of the Fan, 100degre celcius for bad, and 240 nozzle but still promleb in big size object

ericez

there is your diff in temp.maybe try it like nallycat.

here is the video.i think its a perfect raft.

if the glass is clean lightly sand the glass with sandpaper to make a few fine scratches don't  overdue this as the part will be hard to remove, use hairspray on the glass. use the tempatures I use and put a box over the printer if you do not have a printer that has an enclosure.  some print beds can only go to 100 degree celcius it should still be fine, if it can go higher use the higher temp.because heating the bed so hot can take a long time. that is why people do not like to print with ABS     EricEZ  is your printer enclosed. you can't print large without an enclosure.