I picked up a TAZ 3.1 around a month ago and have been impressed by the capabilities of the printer. I’ve been using the stock medium ABS Slic3r settings with an adjustment for filament diameter and a reduction in speed. The first layer seems very rough and uneven when using these settings (and the completely stock settings with filament diameter adjustment.) The nozzle seems to grind along the first few layers and the quality improves dramatically after the 10th layer or so. I’ve attached a photo of the first layer of the upper z-axis bearing mounts and z-nut mounts that I’m printing for illustration.
I’ve leveled the bed (and checked with a dial height gauge.) I still get a decent “squish” on the first layer with the Z-axis height set so that it barely touches a piece of paper. I’ve read just about every post on this site (ones relevant & non relevant to this issue) and am still scratching my head. This filament came with the machine (Lulzbot brand) and I ordered some more today to try some fresh stuff.
This has been a persistent issue with the bed leveled and trying different z-axis starting height adjustments. Any suggestions for “the next step” would be greatly appreciated. I’m printing functional parts at the moment, but this first layer issue still bugs me.