Hiya Phil,

Thanks very much for the heads-up on those materials.

I think I'm leaning more towards the 'one-piece' solution as it'll probably end up easier communicating what it is I need doing to a shop (and will result in fewer steps for them to take to get it made). From a strength point of view: these rollers need to take around 40Kpsi - I'm guessing that by sliding the shaft through the middle like that you'd be talking about a fairly substantial non-slip interference fit along the length of the roller - not sure what kind of stresses that would introduce and how they'd interact with additional stresses that the printing process will put 'em through...

Wal.