SIGH.
I started having adhesion issues. Cleaned the PEI sheet. 3 times. no go. checked the UBL. was ok. Not much play left as I was using the silicon spacers, and things were pretty cranked down to get my old value of about .8 mm deviation across the bed.
Noted the thread about pei sheets eventually wearing out, and this is the original, so it probably doesn’t owe me anything at this point, but tried cleaning one more time, and switched back to springs - the orange ones… not the stock ones. re-ran the levelling sequence.
Ran a test print of .2 mm layer squares… not bad, but a center to right front and back triangle of lesser adhesion/squish than one might like. Did inadvertently grind a 130 mm smooth channel in the PEI. z offset was -2.49 when done.
Interesting note - it looks like they coat, spray the texture, then re-coat the sheet, but I digress.
ran another test. looked really good.
Ran a test print in draft mode for an accessory for She-who-must-be-obeyed. larger bits worked but needs a better brim to prevent warp… fine. smaller parts got kicked right off the bed. Thankfully, no gooed up nozzle.
Just re-ran the manual levelling sequence using a 0.05 mm feeler guage. then the ABL. then triggered that again in Octoprint. This is one deviated bed!
If this anything like the last time I tackled this, it’ll take a lot of fiddling, unknown quantities of whiskey, and the air will crackle ultramarine.
