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Rat Rig Community [Unofficial]•3y ago•

134 replies

migferlab

V-minion z-wobble or banding

Hi all, I built a v-minion full kit from ratrig, everything was ok but when I tested it I found some z-wobble/banding, artifacts in Z axe (in my opinion). After that I try a lot of things, I try to give my best aligning the leadscrew with the pom nut and motor but the problem was still there, I replaced everything, the leadscrew, the coupler (spider and other types), even the stepper motor and the linear rail. I changed the pillow block printed part for another one...

The last thing I'm thinking about is about a skew error, something that is not 100% squared in the main frame, so I'm thinking about re-done everything again, even print all parts again.

In the other hand I have some mods that I've found here and around. Like double linear rail in Z with a new printed part instead of the one that I have that is metallic. I also saw a mod with a motor with leadscrew integrated like voron or prusa. I also see one that is using an oldham coupler instead of the pom t-nut.

Could you help me with this problem? thanks a lot.

PD: Attached the evolution of several changes and improvements.