>> @HaDe I saw you also complained about slippage in the spools, how did you solve it? <<
Guess I wrote about that in the list already but the problem was that the three original length clamping screws turned out to be too short. Alas PLA is not a good material for load-bearing applications because of its creep properties, so the spool would expand from the clamping screws tension and finally slip on the motor axle even with screws fully tightened. The solution was simple: use longer screws :-) No problems ever since.
Guess I wrote about that in the list already but the problem was that the three original length clamping screws turned out to be too short. Alas PLA is not a good material for load-bearing applications because of its creep properties, so the spool would expand from the clamping screws tension and finally slip on the motor axle even with screws fully tightened. The solution was simple: use longer screws :-) No problems ever since.