Al reckoned > On 4/29/20 10:01 PM, Curious Marc via cctalk wrote: >> Or replacing the posts with ones machined from Teflon or Delrin? > > The posts are staked in. You might be able to make tiny rollers to go over > the pins > Their working diameter isn't super critical
That's a good idea. Would cutting sections of an (empty) ink tube from a ballpoint pen work? These are generally polypropelene and should be totally inert. Steve.