Retraction helper

This is a simple clamp to prevent the bowden tube from moving in and out as the extruder changes direction.
This improves the retraction by limiting the movement of the tube only.

The bolt is a 5mm by 25mm long note there is no need to have it very tight is does not take a lot to hold the tube.

Maybe this has been a problem with my tube connector and hence it is not common but this fix my problem.

I suggest you check to see if your bowden tube is moving back during the retraction cycle