hi Max,
once you build an outside cups connector, when things get tight
it is the only thing you will do.
ask me how I know...
peteski,
when you need to build such a drive-shaft coupling,
you can build it from anything that pleases you.
As my first choice, I'd recommend an acetal like delrin.
and then you get to drill out the rod as well as cut the slots.
I guess styrene tubing is generally available and that could work.
2.5mm id and you don't need to drill
Brass the right size was to hand, so the part was made.
Lets see how it holds up. Given the size of the Kato joint thumbs
I suspect I won't have problems.
victor
