I recently got a P1S and have had decent success printing with PLA. However, I have a need for some outdoor/high-heat prints so I ordered some PolyLite ASA in white. I dried the filament for 8 hours in my Sunlu S4 dryer at it’s highest temp and loaded into my P1S straight from the dryer. I printed a few items using the built in PolyLite ASA profile and other prints changing settings based on what I could find online. However, it seems like nothing has helped. Below are some pictures of the ASA Benchy I printed. I’ve tried the following settings to no avail:
All Fans off including parts and aux fans
240-280C nozzle temp
Pre heating bed at 100C for 20 mins
Slowing down printing to 30-60 mm/s
Using Bambu Lab glue stick
At first I couldn’t even get first layer bed adhesion even with the glue, but pre-heating the bed at 100C for 20 mins helped a lot and I got a solid prime line and brim. Even the first few layers of the Benchy looked fine, but after that it was a complete mess. The only thing that looks decent I would say is the “cargo box”. Any help here would be greatly appreciated. Thanks.
If you haven’t done so, maybe try using the Bambu ASA preset first. Also, make sure the pressure advance settings are correct.
Have you gone through the pressure advance calibration routine (Now called Flow Dynamics Calibration)?
Just looking at it, two things I would note, the bad quality is mainly on overhangs so related to either cooling or fan effects. Try printing more slowly and reduce the fan speed slightly for the filament.
Not sure what profile you are using. I print in Colorfabb ASA and Extrudr Durapro ASA and don’t have these issues, but to be fair I’ve never printed a benchy with those filaments.
I did have slight issues with bed adhesion but using the liquid glue helped.
Try drying for longer, maybe the filament was extremely wet. I have had PLA Matte from Bambu that I dry for 8 hours and it still has defects, but after around 24 hours more the prints turn out much better.
I downloaded the manufacture specific profiles for both filaments. And then I used the liquid glue from Bambu labs to generously coat the plate. They literally glued to it.
The default ASA profile I think prints at 260 but the extrudr version specified 265-270.
The polylite spec on their website suggests
240-260c
Bed at 75-95c
Speed 30mm-50mm/s
Fan off
Direct drive retraction distance 3mm, speed 40mm/s
Dry it also for 6hrs at 70c or medium setting if you use the polydryer
I initially printed some small parts with the standard profile without modifications. Then I read that I should turn off all fans which I did before printing this benchy. Of the 3 fans (aux, chamber, part) which ones, if any, should I turn off or try to update settings for?
Change back to the standard ASA profiles (Generic or Polylite) and do not change their fan settings
Look printing a benchy is nice and good but you also need to interpret the results .
Here a little help with that: https://all3dp.com/2/benchy-troubleshooting-guide/
Thanks, I’ll try that! It seems like the following sections are most relevant to my case. I will perform some calibrations and leave the fan settings alone as over-extrusion and (lack of) part cooling seem to be my biggest issues most likely.
Excessive blobs or dots or extra filament: This could indicate over-extrusion due to too high a flow rate. Calibrating the extruder might help in this case. Slight imperfections, either randomly distributed or in a line, may also be due to Z-seam artifacts.
Top of deckhouse windows are drooping: This points to inadequate part cooling or printing too fast and too hot. Take a look at our article on tips and tricks for perfect bridges to identify ways the improve this part of your printer’s performance.
Chimney is vertically uneven or lower quality than other parts: As the uppermost part of the model, each layer of the chimney is added to the one below almost immediately. This emphasizes issues with part cooling or printing too fast that might not be apparent elsewhere and can lead to “slouched” or compressed features.
