Sagging ASA on overhangs
I'm trying to print a new logo head for some part updates and I seem to be getting a lot of sagging issues with my ASA on the overhangs.
Using my qidi xmax 3 at 250c with chamber at 60, no cooling save for 20% on overhangs and printing at 40mm/s on outer wall, 60 inner. Tried supports but no luck.
18 Replies
Looks to me like too high nozzle temperature or insufficient cooling.
It doesn't look like layer ON layer, but layer IN layer.
I tried lowering the temp to 240 and turned on the cooling up to 40% on overhangs but it didn't help much. I even ran a temperature tower and the only overhangs that looked good were even hotter at 270.
If extrusion temp is worked out, then I'd focus more on the cooling of the extruded.
Lower chamber temp (if used) and increase fan speed.
A steel nozzle wouldn't cause this would it? I had to change to one recently after a hotend issue.
Don't know (I've only used brass so far)
alright. I'll lower the chamber to 50 and increase cooling a bit.
Okay turned out turning OFF cooling entirely actually made the best results so far. So lesson learned there. Thank you!
You could also try and run inner-outer-inner in wall slice setting. Counterintuitive, but that gives the outer layer more time to settle and the heat from the other walls does not deform it
I tried that too for the good results. Might have also been a factor but either way. If ASA wasn't 30 a spool I'd be happier to experiment, haha.
Try with cheapish abs. They kinda print the same
This is true. Hatchbox is cheap and quality from my experience.
I can source gembird locally from shops for like 12 euros. Cheapest pla is 12 and only if i order in bulk from gst3d from Spain
Yeah I can get hatchbox for about 10USD a spool if I buy 5 at a time directly.
Let me know how it works out with my suggestion!
What is your layer height and what is the angle on that chamfer? Shorter layers and slower speeds will improve those areas... Can also play with cooling for external perimeter and be certain that you are not printing external perim first
What temp bed?
Turning cooling off entirely was the only thing that worked. I switched to another piece instead to look better.
90
i do 20% cooling 100% of the time after 5th layer, 0% first 4 layers, 100 bed and seems to work well. has the filament been dried?
could also be too short layer time.
Sure hope not. I slowed it down to 30-40mm/s