I am trying to print a large object that is two pieces that screw together. I am trying to use my 0.8mm nozzle with this and PETG for strength and speed of print.

I designed the screw to have a 8mm thread pitch and 45 degree angles with a flat front face that way it would be easy to print. The threads are also 3.5mm deep. The goal really is to make this as easy to print on a 0.8mm nozzle as possible.

The thread can be whatever shape or size it needs to be so long as it prints.

My confusion is this effect you see here where when rounding the corner on an exterior wall the filament is not adhering to the previous layer so it ends up being dragged across the middle.

I’m printing on an X1C with Sunlu PETG. 60 mm/s outer walls.

Maybe it’s a temp issue? Maybe it’s a PETG issue? Maybe 45 degree l is still too much overhang in this case? Is this problem still called “stringing”? Why might it be happening here and how might I design my model to avoid it.

So if you look on the edges of what would have been the start of a threaded socket you can see all these lines that goes across a small portion of the circle rather than around.