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I have done almost every calibration 5-10 times. Almost used the entire spool to calibrate. Everything was working great but on compounded curves like shown it started to show these random gaps on the surface.
The random line at the bottom it was because of me after pausing the machine
The only thing I can think of is the material. But why are they grouped in the same location? My EM should be good.
17 Replies
Use the "layer type" (idk what's it's called, the drop down that shows speed, flow, etc) and see if the speed is changing once the slope starts. It could be speeding up and under extruding.
I had it today when the shine changed on an angled print as it went upslope. The "don't slow for outer surface" setting, (orca: filament > cooling) can help with that.
Interesting. I just switched from Orca to PrusaSlicer. I'll try to look for it.
I did put a limit on my volumetric flow rate though. So whatever the speed is it shouldn't excite that to under extrude.
No need to @/reply, being in thread gives notifications
Ratrigs like to go fast, so too slow and weird things happen.
Bottom line something is changing once the slope starts. Use the slicer visualizations to find it.
hmm 😫
So many variables ðŸ˜ðŸ˜
I'll look tomorrow. I am just too frustrated with it now but thank you for the reply
Happening again on a different spool but same color, type and brand
I am starting to assume it could be something with the printer steppers
Either the extruder or the motion x/y
It was the extruder step off again. Either it is sensitive to the tension screw or something else. Time will tell.
Double check the tool board to extruder wiring. I had mine mixed up by one wire when shortening the cable. It ran, but weirdly.
Interesting! Could you share a picture on how it should be wired whenever and I’ll check. I have done it a while back and can’t remember but I’ll also look
That is very interesting point though
Thank you for sharing that input
I just checked! I believe I have it connected correctly.
Only happens on curved surfaces
Could be my slicer settings
Did you tune the PA value? Looks like its happening near the seams
Also, did you dry the filament? Polyterra doesn't like being wet.
Thank you for your comment. I used this spool as a test to learn and tune the crap out of it. I tested and tuned EM, PA, temp like 10 times as I stated in my previous comment. I also dried the spool for 9 hours before use. I will be lowering the volumetric flow rate speed and see if that will make a difference. I suspected that it could be related.
I'd run a print at a stupid slow rate, like 3mm/s just for a baseline
I was printing at max 23mm^3/s with a .6 nozzle. I came up with that number since I tested my setup a while back with a different brand of PLA and got 30 mm^3/s. Conservatively I chose 23 mm^3/s without testing, but perhaps I chose wrong. I just lowered it to 15 and that fixed the issue. So I am running a max volumetric speed test and will see the result. I also wanted to share this in case someone else runs into the same issue. It was super frustrating since I had spent many hours tuning and returning already.
Max vol test is usually my second calibration after temp tower. The rest are useless if you're overrunning flow.
Glad it's sorted. 🎉
I was off indeed. The top is 30 so I took the measurement lower before it started to warp getting around 17. I'll probably limit it to 15 to be on the safe side which was what I tested and looked good.
I just recently changed the hotel as I broke the previous one 😅 and am continuing to use Rapido 2F UHF and the Orbital. As I am bottlenecked by those flow numbers are there better high-flow high temp recommendations setup?
Filament will always be the limit. I like voxel petg, their pla is supposed to be real good too.
https://voxelpla.com/
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I'll check them out