Idler Pulley mount for 2020 inline connector

thingiverse

As I was trying to reduce the flex in a pulley mount I found the easiest thing to do (with available materials and unavailable skills) was use a 100mm 2020 inline connector. It can be used in different configurations, shown in the pics. Two of them can be used together for a 2040, but the pully might be low, depending on how high your gantry is. You should use at least 40mm m5 to avoid squeezing it together. I only had a 35mm m5 available for the pic. The 40mm mount has the holes so it can be reversed when flipped. It's really just for show; it doesn't add any extra stability over the 20mm one. The connector provides enough support to tension the belt by hand without flexing. If you have a problem gripping, temporarily using a long m5 in one of the slots can help. NOTE: The spacing between the holes marked in the diagram as 30mm was 31mm on the 4 connectors I had, but I can't say if it was a batch / brand thing or more general. Don't print up a bunch without verifying :)