开云体育

Thanks for the reply.
I used 20% fill and 1.2 wall section, feels quite rigid. The arms are printed on a 3D Resin printer, I am do the body in that later.
The bearings (the brass looking parts) are 4mm ID, 9mm OD x 4mm wide, these are still in the post. I also done have the small screws yet.
I suppose it all depends on what you use them for. Mine will probably be to hold 6mm + bars the centre drill the ends.