mckeetech
RRCRat Rig Community [Unofficial]
•Created by mckeetech on 3/25/2025 in #fix-my-print
1mm Nozzle Seam Issues
For anyone else looking at this in the future... I still haven't dialed the seam in, but I have managed to reach the opposite problem point. My seams are now over extruded by a fair bit, but it's close enough for me to get the current project off my workbench.
Biggest influencer in changing the seam behavior has by far been in the retraction settings under printer settings in orca. Retraction length seems fine in the stock profile, but adding extra length on restart has been huge. On the 1mm nozzle, 0.4mm of extra length helped immensely. It seems to be too much on my 0.8mm nozzle.
Decreasing wipe distance has also been a pretty big help. Default was 1mm, I brought it down to 0.4mm with good results.
Pressure advance (in my particular case) had a negligible impact on the seam issue, but did help other aspects of my prints once I dialed it in better. Still unsure of where that value needs to be, but I have it enabled in both printer.cfg and orca's filament settings.
Seam gap setting (Quality > Seam > Seam gap in orca) is extremely useful in dialing in the finer detail of seam, but could not make up for the ~1.6mm gaps I was having at seams.
I still have a lot to tweak and learn to get to a good point, but I am finally at something I can use
23 replies
RRCRat Rig Community [Unofficial]
•Created by mckeetech on 3/25/2025 in #fix-my-print
1mm Nozzle Seam Issues
Or maybe the question I should be asking is where should I enable pressure advance? Following the commissioning guide, it seems I should be putting it into the printer.cfg file. But I also see that there's a pressure advance field in the filament settings in orca.
23 replies
RRCRat Rig Community [Unofficial]
•Created by mckeetech on 3/25/2025 in #fix-my-print
1mm Nozzle Seam Issues
At 0 pressure advance on the pattern method, the corners have slight bulges. At 0.03, they look really good. At any higher, they start to get rounded off and under extruded.
At the same time, at any of these values, I see no change in my seam behavior
23 replies
RRCRat Rig Community [Unofficial]
•Created by mckeetech on 3/25/2025 in #fix-my-print
1mm Nozzle Seam Issues
I guess I'm not really understanding what the pressure advance number means then. Is there such a thing as negative PA value?
23 replies
RRCRat Rig Community [Unofficial]
•Created by mckeetech on 3/25/2025 in #fix-my-print
1mm Nozzle Seam Issues
It was still set to the default 10%. Dropped it down to 1% and saw no change (somehow??) in the seam behavior. Currently trying -3% just for giggles, but don't have high hopes
23 replies
RRCRat Rig Community [Unofficial]
•Created by mckeetech on 3/25/2025 in #fix-my-print
1mm Nozzle Seam Issues
And thanks for the tip about orca's pa calibrations. Definitely got more useful info from the pattern test than with klipper's
23 replies
RRCRat Rig Community [Unofficial]
•Created by mckeetech on 3/25/2025 in #fix-my-print
1mm Nozzle Seam Issues
Not sure how I've never seen that setting... giving it a shot now
23 replies
RRCRat Rig Community [Unofficial]
•Created by mckeetech on 3/25/2025 in #fix-my-print
1mm Nozzle Seam Issues
23 replies
RRCRat Rig Community [Unofficial]
•Created by mckeetech on 3/25/2025 in #fix-my-print
1mm Nozzle Seam Issues
23 replies
RRCRat Rig Community [Unofficial]
•Created by mckeetech on 3/25/2025 in #fix-my-print
1mm Nozzle Seam Issues
I was simply following the commissioning guide from ratrig, which points to the klipper docs for pressure advance.
I’ve had many printers over the years, but this is my first klipper machine and I’m still getting familiar with the details. Do you recommend the orca tuning instead?
23 replies
RRCRat Rig Community [Unofficial]
•Created by mckeetech on 3/25/2025 in #fix-my-print
1mm Nozzle Seam Issues
I've given up for the time being and moved down to a 0.8 nozzle since there are already well tuned profiles. Running the pressure advance tuning in klipper's docs consistently had the best results at the start of the print, which is 0 if I'm understanding correctly. What did improve my holes in the print was messing around more with the retraction settings. Going back to 0.4mm of retraction with 0.4mm of extra length on restart seemed to help, and then reducing the wipe distance from 1mm (default) to 0.4mm made a huge difference. Still not the seam I'm used to seeing on smaller nozzle sizes, but closer to normal
23 replies
RRCRat Rig Community [Unofficial]
•Created by mckeetech on 3/25/2025 in #fix-my-print
1mm Nozzle Seam Issues
Small update, as I was expecting, dropping to 0mm retraction from .05 made no difference
23 replies
RRCRat Rig Community [Unofficial]
•Created by San_Holo on 2/13/2025 in #fix-my-printer
First layer is going to drive me crazy
Two new things to try, thank you both. I knew I was buying a kit, but I was not anticipating the tuning process to involve this much trial and error...
10 replies
RRCRat Rig Community [Unofficial]
•Created by San_Holo on 2/13/2025 in #fix-my-printer
First layer is going to drive me crazy
Having exactly the same problem - @San_Holo did these steps work out for you?
10 replies
RRCRat Rig Community [Unofficial]
•Created by Teo_ on 3/2/2025 in #fix-my-printer
What is this click moving x axis? A dead bearing?
I've got the same click. Coming from the t0 x axis motor area. Have not found the source yet
16 replies