Does Z offset matter after the first layer?
I am using a commercial PLA filament to print 72 mm (length) x 42 mm (width) x 3 mm (thickness) samples. There are 30 layers to be laid in total with each layer's height being 0.1 mm. The nozzle diameter is 0.4 mm. The part is 100 % solid and the raster angle is 0°. I am using Ultimaker Cura slicer and the printer is Ender 6. I encounter the problem of nozzle scraping the uppermost region of multiple (5 samples, all aligned at the top of the build plate) as the print job progresses. I assume it begins after 20 layers (possibly). The scraping is absent in the bottom region of the rectangular-shaped printed samples.
Has anybody else encountered this problem, has solved it or can think of what might be causing this? Could an off Z offset setting have an influence on the later layers?
Do note that the first layer is laid down fine with no visible voids or signs of nozzle scraping the bed/deposited neighboring raster.
These images show the scraping phenomena. The warping was not an issue during the execution of the print job, so please disregard it. The bunny print has no flaw and the G-code for this was present beforehand in the Creality Ender 6 SD card, while the orange samples were designed on Tinkercad and sliced using Cura.
