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Belts used are T2.5 with matching pulleys on the motors. You can use any belt, as long as it fits through the holes on the drive wheels back to back. Best if it is a tight fit, because I don’t have to use any other mounting but friction on my two prototype machines.
I used chipboard screws to attach the Z mounting brackts, but this depends on the platform material. You could even glue it down with silicon… Be creative!
I have added the pipe clamps to the git repository. If not in master, it should be in the experimental ‘lite’ branch.
The purpose of the rib is to deform the pvc slightly as you knock it in, and to give it a bit more flexibility for different pipes. If yours fits snugly without the rib, more than good enough. You can use some PVC weld to fix it permanently, but be sure to be very careful with the captive nuts… If they fall out then, you are screwed. (Don’t ask me how I know)
