The threaded rods broke when trying to get the gears on. Too tight fit, would only get half way in. Had printed at 0.2 BTW, so my fault.. Now sizing gears 102% in X+Y direction.
One question on the threads, if they are a bit tight, the stress is in the wrong direction, twisting the rods off the base. The stress is rotational, so a better design is (like the remix) with flat rods.
why not print them flat as one piece, but missing the lower 25% ? They would still work perfectly as rods, and you would not have any angle steeper than 45 degrees. I have seen this design multiple places No need to have tge threads all the way around. You can actually do fine making an 8mm rod that is missing both top and bottom 25%