Problem when trying to hide the seam
I want to hide the seam. When I set "Scarf joint placement" to Contour the chamfer at the seam gets ugly. What slicer settings do I need to use to fix this?
I've printed over 30 tests with every combination of slicer settings I could think of.
Prusa MK4S - firmware 6.2.6
PrusaSlicer 2.9.2
FreeCad 1.0.2
0.25mm Structural and 0.05mm Structural same result PETG
I've tried exporting from FreeCad as a .3mf and a .stl. same result
The test part is very simple. 50mm Dia with a 3mm wall thickness. It's 15mm tall with a 45° chamfer at the top.
RE:
Honestly, it looks like you have other issues beyond the seam. That said, I find scarf joints amazingly nice looking and nearly imperceptible. If one of those parts in the last image has scarfed joints, you've really messed up the settings. You might want to zip your Slicer .3mf save, and post it here. It allows folk who want to help to see precisely what you've done.
RE: Problem when trying to hide the seam
I made some progress, but I have to retract some of what I said and agree: the scarfs on the Nextruder profiles are horrible. I need to take a couple photos and will post my results a bit later.
RE: Problem when trying to hide the seam
The prints are
0.2 Speed (worst)
0.2 Struct (bad)
0.2 95% filament ratio
0.2 95% filament ratio with 4 perimeters (solid infill)
0.2 Quality on my Mk3 (best)
RE: Problem when trying to hide the seam
I'm thinking even less for the filament ratio would help improve things ... not sure why the PETG is over-extruding on this part, but it is certainly doing that on the scarf.
I'm also seeing some linear advance issues ... but they are minor compared to the scarf over fill.
Maybe set your filament flow multiplier to 93% and see what that gets you. It'll be a tradeoff to infill closure and seam quality.
The more I play with my new Core One the more it feels like it's a work in progress. You'd think Prusa would have the Nextruder profiles dialed in by now. I have some calibration tools on the way, if any of the tweaks to cals improve this scarf issue, I'll post an update.