Solved Strangely indented perimiter issues.

Easiest way to show this is pictures, so here's a Benchy and an accuracy test object.




As you can see, at the starting angle point, there is a noticeable indent where the perimeters should be crossing over themselves.

This problem started with Mattercontrol 1.6.2, it did not do this before.

I reverted to Mattercontrol 1.6.1, and it's still doing it.

My Printer is an R1+, modified extruder and parts fan, and a RRD Graphical LCD controller, running Marlin R8. This is all in Makergeeks PLA @ 230C, 50C bed, all at 60mm/sec except the first layer (30%). 30% infill (hex), 45deg starting angle, 3 perimeters, 5 top and bottom layers with 106% overlap, 0.2mm layer heights.

I've tightened the Y belt, installed belt tensioners on the X-Belt to take up slack, and generally have gone over this printer with a fine tooth comb looking for snags or hangups - nada, not a thing, and I can't find any incidence of this online anywhere.

 

Here's an XY Resonance Test object.

First up is the proper seam.


Next up is the weird part.


This is supposed to be this.


This kind of feels like a stepper issue? Going to try Slic3r in a moment, still thinking this is mechanical.

 

Might be on to something with the slice engine. Matterslice is crapping itself on these models, while they turn out mostly OK with Slic3r as the engine in Mattercontrol, if not for the massively underextruded walls. Not sure why that is. Going to try Cura next.

 

Weird thing is, I've had great luck with Mattercontrol. Printed the entire Open R/C F1 with it, tons of stuff.

Might be able to call this one closed. Switching from Slic3r engine to Matterslice seems to have fixed the issue?

Can't get a decent print out of Slic3r, keep getting underextruded walls, and honestly I'm not really that enthused about trying to get a piece of software that hasn't been updated in over a year and a half.

Long term, I need to get Cura & Repetier-Host working, or buy Simplify3D.

Thanks for the pointers, guys.