Yes but was improvising. I used 2 layers of tape and no marring.Would a piece of hose tube to stop the chuck jaws marking it not work? ie stick the end into a bit of hose then grip that in either pen jaws or outside jaws and sand to your heart's content?
Look at the second pic. Its what you spin it on. In middle I used lignum vitae for the wear surface.By the way what's the segmented base for ?
I used tape.For a jam chuck, Take a 4x4x8 block, on one end drill and tap to fit the lathe headstock threads. Turn round, then drill a 1/2 hole as deep as you can from the tailstock end. Ream that hole with a 2MT reamer. Then cut that end to make "4 finger collet". To tighten that collet, I would use a leather cord, just wrap and tie to tighten the "4 fingers". An option would be a hose clamp or taper that end and make a slip collar that would tighten the "fingers".
You might want to eventually make this out of a hard plastic like Delrin or nylon. But I would start with straight grained hardwood like maple or Osage.
I've seen a dozen or so styles of drop spindles, same for supported spindles and even grasped spindles where the person just sort of spins the spindle in their fingers.Thanks for that video. I have a mate in australia who makes " drop spindles" so wondered about the base.
Merry Christmas !
I cant afford big pieces of wood.NICE! I'm really enjoying your segmented disks.