I have been trying to upgrade many of the parts of my old printer. While replacing the bearings with better versions, I had to do a lot of work to dissemble/reassemble the printer, and was worried all this force I had to put on the printer could have possible bent the rods, so I decided to order new ones. I figured I might as well get rods that were likely more durable and accurate then the ones that came with my Chinese printer.
I was advised that these were good:
When I finally got around to installing them however, they seemed to be rather off. It took effort to get them to fit in the holes/retainers my old ones fit in, and my bearings were significantly harder to fit in them. When I tried putting on the bearings though is when they really seemed off. The bearings would only spin in one direction as I was aligning them, and even with copious amounts of lube, they were rather rough, not moving smoothly at all. When I tried the bearings on my older rods they were much smoother.
Any advice on what I can try to do to determine if they are accurate or if I am doing something wrong? Sadly, I don’t have any precision tools that can determine sub-millimeter variances, in fact, I can barely get it down to a single millimeter, about the best I have is measuring tape intended for sewing.
