On my CRM4 printer the corner of my raft is slightly bend upwards. I put down lots of glue but the corner is lifting. This exact same spot has happened on three prints. What can I do to make the raft adhere on that one corner in the front left of the PEI build tray. The raft starts off flat adhering to the build tray but then for some reason during printing of the object it lifts off slightly upwards. My build tray plate is 60 degrees and the nozzle is at 200 degrees. I am thinking of using tape to tape the corner down to the build tray.
It is possibly a draft you can try moving the print to the centre of the bed if it isn’t and try a draft shield or protect the printer with something, a box maybe. be careful you don’t create a fire hazard.
Should I increase the nozzle temp more for future prints? The rest of the raft adheres to the surface at 200 degrees just that one corner doesn’t.
200 for play generally is fine 220 maybe but that is not going to effect warping curling. That is either cooling too quickly or a warped bed. Especially since the rest is printing well. Have you verified the z offset?
I am unsure how to verify it.
Print a calibration target if it isn’t built in to the firmware just download on from printables or any other repository.
My guess is still it’s cooling too quickly in one area
If the bed is warped or not leveled in that corner it will cause prints to lift also.
Will a calibration test with a small model fix that issue? I thought every time a model prints the CRM4 nozzle moves around the build plate and tests every inch for being level.
As I understand it should. If there bed is bad it will not be able to adjust enough. Rapid cooling imo is still the most likely.
Can the fan be adjusted on the CRM4 printer?
Yes that will be in slicer settings. Usually warping is not from part cooling but something else.
I assumed pla but are you printing other filament?
Did you try a different model? Some designs will tend to warp more than others.
If using PLA, try to lower your hot bed temp to 0-20Celcius. Sometimes the printed part warps if the hot bed is heated from 50-60C.
I thought my hot bed should be up in temperature so the PLA adheres. It is at 60 degrees
50-60 is typical for PLA bed temps. Personally I almost 100% of the time bring at 55-60.