I just installed a Swiss Micro Metal hotend in my CR-10 Pro V2 and for the life of me, I can’t get anything to stick to the bed anymore. After installing the hotend, I manually levelled the bed, and kept the autolevelling enabled. I also continued to use the roll of PLA I was half-way through.
While printing test objects I was adjusting the hight using the the ‘adjust’ button on the ‘printing’ screen.
I can raise it to the point where I can see the filament pour out of the nozzle and land on the bed, all the way down to lowering it till nothing is extruded. Somewhere in between it looks like it’s right, but I can’t find a spot where it looks like it is ‘squishing onto the bed’. Every height I have tried results in either nothing, or something I can easily wipe off the bed.
There doesn’t seem to be firmware Z Axis microadjust setting in the base system - you have to move the heated bed (while it and the nozzle are hot) up to a position where the paper is grabbed slightly between the nozzle and the heated bed and then move the hot end to a corner of the heated bed and go around until each corner grabs the paper with some friction but doesn’t lock it in.
Could you indicate whether or not your printer is stock, what the Z Axis sensor that you’re using is and what is the Firmware source and version?
Those instructions are the basics that apply to most all printers, and what I always do first.
Yes, there IS a Z axis micro adjust in the system, its on the print → adjust screen (like I initially reported).
Yes, I did manually level the bed first using my sheet of paper (like I initially reported)
Yes, the printer is stock (firmware V1.70.00 BL) and it has the stock BL Touch.
Just to follow-up…
After an overnight rest, I decided to try again.
After re-levelling the bed for the 5th or 6th time, and using the Z micro positioning…
I’m now back to normal and managed to print a test piece whose first layer looked ‘good’
and stuck. Why I couldn’t get it last night is beyond me, but I’m counting my blessings now.
Hopefully it will stick! (both the level and the filament).