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Hey Everyone,

I've had my Rostock Max V2 up and running for about 2 months now. Everything was running smoothly for about a month when I began to get some squeaking noises coming from the u-joints. I read the forum and saw it recommended in a few places to try white lithium grease or some dry teflon lubricant. I pulled off the arms and u-joints and applied white lithium grease to them. This helped for about a week and then the squeaking returned, and this time I noticed that the white grease was now black. I believe the metal u-joint is grinding on the glass filled nylon at the edges and the particles are turning the grease black. I cleaned everything up and then applied some Dupont Dry wax teflon lubricant, this reduced the noise but did not stop it.

Here is a video of the noise it makes, the noise is not constant.

https://plus.google.com/111986408064350 ... ViT4VzB8QR

https://plus.google.com/111986408064350 ... 5ee9tXq7dX

I'm wondering if anyone else has experienced this or has any suggestions on possible fixes?

Change out the aluminum joints for the newer acetal ones. SeeMeCNC sells the joint pack for $9. The grinding of the axle plates and effector will stop.