I am printing more rod ends for my 3D printer and testing out some speed adjustments.
I just disassembled my hotend and reassembled it with a piece of tin shingle that I cut up to use as a fan block. It seems to do the job. I might not have the assembly as tight as I did before, so I had to adjust the Z height a few times till it seemed right.
I think I should have set it to 20% instead of 15% infill. (shrugs) I will find out when I use them, I guess. The rod ends are on my thingiverse page, if anyone wants them. They are U-joint style and are designed to fit in some of these green sturdy stakes that I got from Lowes.
I think the holes are not printing round like they should. 
Nope. It is either the Z-hop or the extrusion multiplier, I imagine.
Whew! A test fit does not show too much wiggle. At least then I can print some more while using those if I need to.
The problem zone was some roughly 5mm horizontal axle holes with a small amount of material at the top, bottom and one side. I am considering adding a slightly smaller plug inside the hole to pop oit after the print. I do not know if that is a good idea or a bad one. The plug might end up fusing to the rest of it on some people. Some people might have better settings that would print the holes kore reliably.
Hmmm…the other option I thought of was making them smaller for the sake of drilling them out.
I should probably check to see if “infill everywhere” will put infill there too and make it work better.
@Mindless thanks for the tip