Burn-through in ASA? What causes this failure?
My bridging fails. Holes in side walls (skirt). Also weird filament curling. Using stock ASA settings with pretty slow printing speed. 260C, 105 bed, 25% max cooling. Enclosed printer and preheat for 30 mins.
43 Replies
Run a temp tower and see what is best for your printer and filament
Doesn’t look great. Tower was 270c (bottom) to 250 by 5c. I can’t tell which temp is the best. It got pulled off the plate at 250c. Bridges look pretty droopy. I’d increase fan maybe, but concerned about warping.
you sure your filament is dry?
Yes, I have it in a filament dryer for hours. I print from the dryer.
It was also fresh from the sealed mfg bag with desecant in it. Filament is Polymaker ASA which I am not finding Polymaker easy to work with. I had some PETG and I had to print slow to get it to work right.
I think my machine is good. I've done the belt tensioning and shaper graphs and I get good peaks, no apparent loose bolts. No belt slapping against extrusion sounds, etc. I had a bad X carriage that was loose causing issues but replaced the whole rail/carriage and it's solid now. I feel like it's slicer settings but I am not great at figuring that out and there is so many options
I never trust filament out of the bag. If you look at how these filaments are made they are cooled into the strands going through a water bath. Good filament makers dry their filament after that and I consider Polymaker one of them. I have printed a few rolls of their ASA file.
I found the default profile for the VC4 lacking in cooling. I had to go about 2x to get things clean. Also have you done any shaper tuning and applied it in your configuration and in your slicer? I see some ringing next to the temp numbers. That will not fix the issues you are having but its something to get better quality prints when you get your temp / speed / cooling figured out
I have the powerful SanAce jet-engine cooling fan. What did you set your cooling to for polymaker asa?
Yes, I did the shaper tuning and applied to printer.cfg....I didn't know you can apply it to OrcaSlicer! Where?
are you using the 9HVA or the 9GAX fan?
as for shaper tuning the recommendation is to use the mzv settings in your printer.cfg. Then take the lowest max recommended accel, which should be your Y, and set that as the max accel in your slicer for the external perimeter acceleration inside the slicer profile
this is far from perfect but this is what I use with polymaker asa on my vc4 with a 0.4mm nozzle
Yes, I am on mzv for both, around 42 and 70 irc. I did get mv recommendation in one graph but I was pretty tight on the belts. I did use the recommended accel of the Y which was 5200.
Using the 9GAX0412P3S001 fan
even if you get mv recommendation I think they say to still use mzv settings.
yeah, I read that too.
I am using one as well. I had a 9HVA on my VC3 and it was to much, plus it would not spin up at as low of a speed and it does not spin up as fast as the 9GAX. The 9GAX seems to be the goldilocks fan
You definately have a lot more fan then me...I can give those settings a shot. Thanks!
no problem
You use the Orbiter2/Rapido combo?
yah stock VC4
ok great. I will try some of your filament settings too. I had 0.91 for filament multiplier after doing a flow test
If I remember correctly this is my asa tests. Might have been polymaker abs but either way it was stock fan settings to the ones I posted which were about 2x stock profile.
I have the vcore2 with a super lightweight gantry and aluminum Y mounts
and 48v steppers
nice
After hearing what you said about mfg, it's possibly it isn't dry enough. I had it in the dryer maybe 4 hours so far.
I dried mine like 6-8 hours
What was your volumetric limit on the ASA filament?
its at 0. I have not done max flow tuning yet but I dont have the speed cranked up much
Wow! What a difference! Bridges are working.
There does seem to be something wrong with my input shaping. It looks like it’s way over-compensating.
I can see where the tool head is pulling back after the 90 into the part so there is a vertical crevice. Weird.
rerun your shaper graphs and post your shaper config from the printer.cfg and lets see what it looks like
Those are looking worse than a week ago, and the frequences changed a bit too
I had the "Motion Ability" tab in Orcaslicer with the accel set to 9000...and it is enabled to output those limits to gcode...so that should be changed to match the 6200. I am going to try another print with just those settings changed and see what happens to that ringing.
I am trying to get a few new EVA parts printed so I can rebuild the toolhead with the Beacon probe and a proper EBB loom mount. I have my EBB42 mounted to a make-shift loom mount from spare printed parts. It's pretty solid but could be better and the hanging loom might be causing that bump >75Hz.
No change with OrcoSlicer changes. Found out after printing those settings aren't transmitted to gcode when output is set to klipper anyway.
something is wrong with your y shaper graph. If you notice almost the entire spike is Z motion. Either something is really wrong with your printer or the toolboard is not oriented correctly. I suspect your shaper graphs are not lining up to the correct directions.
your X spike is a little wide to. Both of those could be due to your mount. Can you post a picture how the toolhead is mounted?
Ellis’s pressure advance tuning. I was at .045 now reduced to 0.01
Tool head. Ah yeah. That ebb mount is Jank, I know lol. I used an extra plastic piece from the rear motor mount haha to mount the ebb. It worked. Just need to print the right ebb one.
its not that janky but its mounted in the correct direction for a VC4. I am not sure how VC3 RatOS is expecting it.
I superglued the rear motor mount plastic to the standard loom mount. EBB just happened to fit the same holes as the stepper on that print hehe. It is solid, but I think the standard loom mount is not enough. I added some rubber tube there to strengthen it.
yeah, the axis labels in the graph do not match physical axis but I just ignored that...I heard this doesnt matter...but I guess there is a way to remap the axis if it does.
Maybe you are right that it does not matter but I am not sure how the shaper numbers you get an install in your printer.cfg are affected by having axis flipped. What is strange though is Z spiking up but your Y as well. So even if they are not mapped correctly you are having motion on a 2nd axis. Something to track down
Yes, EBB42 v1.2 and that diagram shows I am getting that extra acelleration in the actual X direction. So my guess would be the loom conducting Y accel into the X axis.
I think I should be supporting the loom on the roof of the enclosure a bit.
Latest print with 0.1 as pressure advance is better. No more vertical divot in the edge. It’s not perfect but should get me some new tool head parts 🙂
What settings did you end up with? I am running through the same issue