Thanks.
Yes its a rough cut.
I am going to cut out a 4mm cam as well. I think that it will make a differnce.
The red silicone tube is connected at the back withan M4 and the needle bar is only a 20mm long round steel rod witha 3mm in diameter. So the red tube.. (huhuh.. red tube) is hollow in the middle. So that results in a very little whip plus a little give. I noticed that you can pull out the rod a millimeter or so to create a larger give.

This is in no way a finalized product. Just trying to make something and to continue to improve it as much as I can for as long as I can.
And I am going to make a few and ship them out to some of you to try them out.
All I ask for is an honest feedback.

I will make a new 4mm cam (or do anyone think of any other measurement, please let me know)
And also make another kind of binding posts. Those on it now are just some ebay shit. I want brass, fool.

Thanks for the possitive comments!