Hi,
I’m trying to print a simple sphere. Using the 0.20mm Standard @BBL X1c profile and some ABS. I’m using this ABS for other prints and there is no issue. So when printing this sphere I wanted to give it more strength. Using the 0.20mm Strength profile gave me some bad outer walls for some reason. Switching back to the Standard profile and all is fine. I only changed the Wall Loops from 2 to 6 in the Standard profile and again bad outer walls. This is what I tried so far (every time bad result):
- Selecting the Standard profile and changed the Wall Loops to 6
- Using different infill patterns
- Changed outer wall speed to 60mm/s
- Changed the Order of inner/outer wall (all of them)
- Reduced the Flow Ratio with -0.10 , -0.20, -0.30
- Infill/wall overlap to 5%
It look’s like all is starting at around layer 26. I think the filament can’t find it’s way so it’s starts building up. When there is only 2 walls the infill has more ‘room’ maybe to expand, I must be missing something…Any clues?
Regards,
Peter
I think it starts warping, even just slightly, and because there are multiple “full” lines, excess material has nowhere to go. Try reducing the flow ratio by a few percent? In any case I would try printing it from outside-in with at least some sparse infill.
thank you for the reply. I’m still tuning settings. Dropping the flow rate makes it better but I’m down to 0.80 now…think this is way to low. It’s getting better but I’m not there yet…keep u posted.
The filament calibration (flow dynamics) could be wrong. In any case, dry the filament beforehand. Then set the flow dynamics manually again. Or if you have calibrated manually, then use the automatic. There must be similar (almost identical) values.
I have a similar problem with surface quality in one area and I can not figure out what the root cause is.
I print PLA-CF and not ABS but I use as well 6 walls. Don’t know if it could be related, but you can check here:
Bad surface quality when printing PLA-CF
it’s cooling. Because laying a big chunk of plastic, the heat cannot dissipate fast enough. I did some test with bumping up the cooling and it looks promising. Will continue testing and post some results in a few days…
So after a lot of tweaking, it came down to cooling. I changed the walls to be a little thinner (0.40) and bumped up the cooling to 100% for all outer walls and inner, infill etc 67%. The first picture was when cooling was bumped up to 80%. The last picture was 100% and with the top glass lid removed. I’m happy with the results now. Thank you for sharing thoughts.
You mention increasing cooling for walls to 100% and infill to 67%. Where do you find cooling settings for walls vs infill? I don’t see these kinds of options with advanced turn on anywhere. it’s just layer cooling settings.
