Iv been wondering something as I continue tinkering with my SF settings to get the absolute best quality I can out of this printer.
Z height. So I bring my nozzle to about 1mm away from the platform at which point I lower the nozzle in 0.1 increments until it is just resting on the surface of the platform. I hit make current position zero and then home the Z axis to maximum.
The value always comes out 137.5 every time in multiple different locations on the platform. However lately I have found that in the Z offset I have to go even higher in order to get stuff to stick. So I will put in values like 137.68. If I'm understanding this correctly at this point shouldn't the nozzle be jamming into the print bed? Since my Z max is 137.5 it should not be able to go to 137.68 without smashing into the bed.
Iv tested this to see how high I can go and I maxed out at around 137.9 at this point the filament was getting extremely squished and the nozzle was basically 0.1 from the print bed. But when I go back and remeasure the Z height like I mentioned in the beginning it comes out to 137.5.
Am I missing something here or might there be a bug in RepG25? My first layer settings have the nozzle lift ratio at 0.0 so the Z height offset should be controlling this. I'm a bit puzzled and wondering if anyone else had any ideas on this?
EDIT: Forgot to mention I have tested the Z height with both the HBP cold and heated up, just to eliminate any potential warping and it has always come out the same value 137.5.