When I print with PLA, I get a perfect first layer.
However, when I print with PETG, the first layer looks like this:
I've read all the info that suggests reducing the temp, speed, and increasing retraction... I've done all that which has improved things a lot, but I still get this... I can't seem to work out what's causing it.
How do I get a perfect first layer with PETG?
The latest settings that I've tried, and produced what you see in the picture are, using Cura 4.3 standard Dynamic Quality 0.16 mm profile with these tweaks:
- Temp: 220 °C
- Bed: 65 °C
- Retraction Distance: 10 mm (not that this would have any bearing on this flat first layer)
- Print Speed: 40 mm/s
One thought I had, does PETG need a different clearance between the nozzle and the bed than PLA?