[ohohyodafarted]

I did some research and I found solid fiberglass re-enforced fiberglass rod and also phenolic resin rod in standard sizes. I would hope that the ceramic rod would be 1/4" 5/16" 3/8" or something that would be very easy to adapt without machining the OD of the shaft. The slot/keyway is easy to machine on my milling machine using a slitter blade on an arbor.

Too bad you don't have a digital caliper Tom. You can by cheep digital calipers at Harbor Freight for about $15 to $20 depending on the model. They are not the best quality, but they are accurate. I have one and use it constantly.

I guess I will need to wait till I have the time to repair my SC with the broken shaft to find out what the shaft size actually is.