Greetings everyone! Looking for some info. I finally got around to building my spare extruder for my TAZ 6, swapping out my printed parts with the strengthened models and swapped over to a micro swiss .3mm nozzle as well. Next up is refreshing my original extruder, same treatment but a .5mm micro swiss nozzle.
Prior to any changing of parts, I was able to run some test prints and both extruders worked from the same settings and printed just about identical. With the new .3mm nozzle, I noticed I had to adjust my z-offset, quite a bit. the first layer was not sticking well and the micrometer measures .37mm first layer, even though I had it set in Cura to .2mm. The z-offset was at -1.435 prior and is now at -1.5, and I can probably set it to have the nozzle a little closer still. I measured both extruder configurations and there is no difference. Did the Z-offset have to be adjusted due to the filament coming out being thinner? Any other reasons for the big difference?
Part 2 deals with filament changes. I print mostly in PLA and my prints are great. The printer could use some maintenance, but overall, quality is excellent. When I switched to ABS to do the extruder parts, my first layer was squiched way too much, almost looking solid and not having lines showing the path of the filament. It seems to have halved the distance of the nozzle to the bed, just by printing in ABS. How can changing filament change the Z-offset?