Ok steel wool did not work for the textured print plate.
In this thread: https://forum.bambulab.com/t/help-pla-warping-nothing-helps/4517/36
I read about using 3d Lac. I did it and it worked very nice.
MitchNC wrote about increasing the bed temp from 55 to 60. I’m running a print now with that setting. It looks like it works.
I’m printing a box of 9.5x9.5x1.7 on the far right corner of the machine. With a 5mm brim.
In between prints I wipe down the plate with a medical non lint 70% IPA wipe.
These are the tests:
First print sanded cool plate, works like a charm (I only sand the plate when stickiness fails, then wipe with medical IPA pad.)
Second print textured plate, Failed. in the first layer
Third print textured plate after very fine steel wool scrub down and wiping with IPA. Failed. In the first layer.
Fourth print after using 3d Lac. Worked great and wiped model surface afterwards with IPA, it had some 3d Lac on it.
Fifth print textured plate no lac increased bed temp to 60C from the standard 55C. That worked ok, but 3d lac had better stickiness.
I did al these prints with bambu pla-cf black.