RE: Slight Z Wobble?
Why do you think its z wobble ? To me that looks like the variance you get when the filament is not a consistent size.
RE: Slight Z Wobble?
So maybe the filament is just shitty?
RE: Slight Z Wobble?
You can get that sort of variation from many things. Belts a bit loose, sticky bearings, ambient air temps moving around, cheap filament, bad model, and even slicer anomalies or non-optimal slice settings for a particular filament.
Get some time on the printer and watch for things that are a consistent problem. Print a few of the sample gcodes, too. They are good references for seeing set up issues.
As a data point, I've been using pretty much all default settings for years, and get reasonable results. There are places I do things different, but those are pretty rare. My philosophy is to not change a setting unless I can predict what it will change on the print. But I am also guilty of playing with settings just to see what they do.