Hello. Looking for a round device that one end can acccurately grip (via expanding fingers?) a 1/2" round ID of a steel "puck", so the whole outer surface of the puck can be sanded/polished. The other end I can chuck into a lathe. Is there anything off-the-shelf available ?
Thank you. Marcel
look under "expanding mandrel"
I have a set of KO lee expanding mandrels for sale right now.
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Dio you have a lathe? If so, make a tapered mandrel to slide the part on to.
I've done this a few times and have just made my own mandrel. Chuck some material, machine a spigot to locate the part and face a shoulder for the part to go against, tap for a suitable countersunk screw, then make two slits at 90 degrees to allow the countersunk screw to expand it. Easy to do on a lathe and bandsaw or hacksaw. If more info required I can post a picture tomorow.
This chuck will expand in a blind hole:
Nice idea for a small mandrels, I've always done the same technique using a pipe plug. (npt)
Thank You, Randy
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Really? What range and how much?
Gunner
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