Are there any tips for getting a smoother surface, especially top surface, when printing with PA6-GF? Before anyone asks, the filament has been thoroughly dried before printing.
I find that the side walls are acceptable, if not as smooth as I would like, but the top surface is noticeably rough.
Did you ever find a good solution on this? I am very much running into this as well. I’m about to try using a .3mm layer height (this was .24mm) to see if this gets less caught up in the glass fibers, i.e. dragging them along the surface.
Not really. I have since given up and moved away from PA6-GF.
After much tuning and messing around, I have had a bit more success with printing PA6-GF. The biggest difference maker for me was drying the filament WAY more than Bambu Lab had with their recommended settings. Using the AMS-HT, I had done 85ºC for 24 hours after removing it from my dry box and was still running into issues. Running that same 24 hour cycle 3 times in a row seems to have actually managed to dry it sufficiently. I had a hunch this was the issue when I noticed the nozzle oozing a lot when it was getting the printer ready, even though I wasn’t seeing bubbles or hearing any steam.
It’s still a work in progress for me, but I am now getting acceptable finishes.
Another thing to try is doing a flow ration calibration. I am currently running a flow ratio of 1.025, which is a decent amount higher than the default.