wavy corners

this print (after rebuilding my VCore 3.1 300) has some issues. My question is about the wavy corners.
Input Shaper is tuned. I have this with all filaments, no matter fan or temp settings - so probably no pressure advance problem. This is the 3Do Ratrig green ASA filament with the ootb SuperSlicer settings.
What can I look out for?

slow-yellow•12/4/22, 6:17 PM

does this happen with all prints? If you print a tall hollow cylinder what does it look like. (Looks like bad ZWobble to me)

uncertain-scarletOP•12/4/22, 6:19 PM

all prints. I'll make a cylinder to test. is 1cm radius fine for this?

slow-yellow•12/4/22, 6:35 PM

something like this https://www.thingiverse.com/thing:2134978

Z Wobble Test Piece by tuxcat

Test piece to check the Z wobble banding from your printer.
Added a square version.

slow-yellow•12/4/22, 6:39 PM

that will confirm, but it likely is zwobble, you'll want to check your lead screws, bed arms, oldham couplers and z couplers for binding and/or crazy misalignment. For the z couplers make sure you first secure to the stepper, then secure, with the bed installed, the lead screws - you want it pretty tight (but don't hulk so much to destroy the screw) and make sure they are all the way in

uncertain-scarletOP•12/4/22, 7:18 PM

clearly wobble... (ignore the seam, I tried a too high PA setting for this one).
lead screws seem fine when I roll them on a flat surface. they seem to move as needed within the oldham couplers.
But I removed the first arm now to be sure and the oldham coupler feels a little bit "scratchy". hm

uncertain-scarletOP•12/4/22, 7:30 PM

could it make sense to grease the lead screws a bit?

slow-yellow•12/4/22, 8:44 PM

I’d check for anything mechanical, like binding or a “bent” lead screw

slow-yellow•12/4/22, 8:44 PM

Just checking, where are the seams on this print?

uncertain-scarletOP•12/4/22, 8:46 PM

these are the seams that are also shown in superslicer. A bit much compared to earlier. But I believe these things have nothing to do with each other, as the wobble is there for a while and I haven't tuned for this filament yet.

uncertain-scarletOP•12/4/22, 8:47 PM

I'll check the rails for perfect seating next. maybe when assembling I made a mistake here.

uncertain-scarletOP•12/4/22, 8:49 PM

the lead screws don't look bent. I rolled each of the three on a flat surface. one was super smooth, the other two looked smooth as well, only wobbled back a tin bit when they stopped

psyvision•12/4/22, 10:15 PM

Have you actually lubricated them?

uncertain-scarletOP•12/4/22, 10:43 PM

yes. it got a little bit better, but I don't see an issue with the lead screws. I'm quite sure they're fine.
I rebuilt my vcore in order to make sure there are no geometric issues after I had changed from the non-enclosed to the enclosed variant. Maybe the rails aren't perfectly aligned, but I still have to figure out a good way to verify the geometrical accuracy.

uncertain-scarletOP•12/4/22, 10:45 PM

I realigned the rear z-axis and it seems a bit better. I'll do the front rails tomorrow. I already see a slight improvement, will now print the voron cube again to get a better comparison

Iicke these are the seams that are also shown in superslicer. A bit much compared to e...

miklschmidt•12/4/22, 11:07 PM

huge overextrusion + bad PA tuning, is what it looks like to me. (it's close to impossible to provoke z-wobble this bad on a V-Core 3, no matter what you do).

Are you using a huge nozzle here?

uncertain-scarletOP•12/4/22, 11:32 PM

I am using this one: Phaetus PH Volcano hardened steel nozzle (DLC coating) - Diameter: 0.6mm

Cclean-aquamarine huge overextrusion + bad PA tuning, is what it looks like to me. (it's close to ...

uncertain-scarletOP•12/4/22, 11:33 PM

will do some proper PA tuning tomorrow as well. hope that helps. my extrusion is at 0.93 for 3DO Ratrig green ASA

Uuncertain-scarlet I am using this one: Phaetus PH Volcano hardened steel nozzle (DLC coating) - Di...

uncertain-scarletOP•12/4/22, 11:36 PM

but I had this issue already before, with a Microswiss plated brass 0.6

uncertain-scarletOP•12/4/22, 11:38 PM

can't remember if the issue was there already when I was using the Pheatus UHF 0.6 which I replaced with a CHC Pro. This one by the way - despite of several PID tunings - overshoots when heating up by 6 - 10 °C, and while printing is between 244 and 246°C when 245 is set.

Iicke can't remember if the issue was there already when I was using the Pheatus UHF 0...

blacksmithforlife•12/4/22, 11:59 PM

Are you using a pt1000 by any chance? I found my pt1000 would vary a lot until I plugged it into the standard thermistor port instead of the dedicated MAX chip port

Iicke will do some proper PA tuning tomorrow as well. hope that helps. my extrusion is...

miklschmidt•12/5/22, 12:05 AM

Which extruder?

uncertain-scarletOP•12/5/22, 12:05 AM

I am using the ATC Semitec 104GT-2/104NT-4-R025H42G that's part of the CHC pro. Which reminds me to check wether I have set it.

Cclean-aquamarine Which extruder?

uncertain-scarletOP•12/5/22, 12:05 AM

the extruder is an Orbiter 2.0

Iicke the extruder is an Orbiter 2.0

miklschmidt•12/5/22, 12:06 AM

Board? Toolboard? v2.X?

uncertain-scarletOP•12/5/22, 12:06 AM