RCAddiction

LOL. Had no idea you were nearby. I fly at Venice RC! The field is at the back of the Sarasota County landfill, at the end of Knight's Trail Rd, off Laurel Rd near the highway. I don't know about Venice, but north Sarasota was sunny early this morning when I walked the dog. But it has gotten more gray and cold as the day moved on.

I'm very appreciative that you found this particular nut! This must by why you are an Expert! I don't fly electric stuff very often, but am venturing into my 2nd 3DP plane. I've been flying RC for >25 years, and at this point it's mostly giant scale gas powered aerobatic planes. 3DP planes is another dimension in the hobby to explore. Naturally, I had to pick one of the more challenging models to print. This plane (Notos) requires printing in Cura 4.12.1 for certain parts that need surface mode like this one, and Cura 5.0 or greater for other parts, because the earlier versions make it come out a bit heavier. But the newer versions add other issue on the ones that require 4.12.1 Love it. Well, I'm now off to order some carbon fiber rods from WindcatcherRC for the build! warmth from sunny Sarasota

It's perfect now!!! Many thanks!

Cura 4.12.1 PI3MK3M_WINGTEST_P3 LW_Planeprint.3mf You were correct, Greg. "Wipe nozzle between layers" was enabled. I've just disabled it. The sliced project file is attached, with that correction made. I am starting a new print right now to see if it fixes it. I'll know when I come home for dinner whether that fixed it!

Trying to print the PlanePrint thinwall wing test part in anticipation of building their Notos. https://www.planeprint.com/notos Printer - Prusa Mk3S, diamondback 0.4mm nozzle, 0.25mm layer height, with Polymaker LW-PLA (pre-foamed). I have no problem printing this material normally, but have run into an odd issue. This part (and most of the plane) is designed as a surface, so it can only be sliced using experimental Surface mode in 4.12.1. I have mostly move to PrusaSlicer, but the single wall surface design cannot be sliced in PS. I was struggling to get the underside of the angled flat wall solid. It was underextruding, I believe, leaving tons of holes in the small triangular flat surface. Despite the appearance of the part, prior to cleaning it up, I am having zero issues with stringing. Internal parts are clean. Per Rene at PlanePrint, I've increased the retraction prime amount to as high as 1.5 to get the angled wall to fill completely. At the Z seam I can watch the print head actually print this weird wall perpendicular to the Z seam, despite it not being visible in the slicing preview movements. As I increased retraction prime amount from 0 to 0.3 to 0.5 to 1.0 to 1.5 I've seen this weird wall extend further and further out from the actual wing part. The weird wall is actually a full wall thickness thick. Temp makes no difference. I've run it from 200C (where it normally likes to print this material) all the way up to 235C. In the cleaned-up part, you can see the underside of the triangular wall. The slot in the back vertical wall is for a hinge to be inesrted I have not seen similar defects in image searches I've done. Any idea what causes it and what to do about it?