For a tailstock die holder I looked around the Internet for awhile and finally bought a set of plans from Clickspring for $3. Although I made a few changes to the plans it was well worth the $3. The main parts are shown below:

I followed the plans and came up with the version on the left. Hey, it's designed for the Sherline what could be wrong. When I tried it on the lathe it hit the cross slide table. I forgot that I replaced the table with a longer, and thicker, one for milling. So, I put it back into the large lathe and "thinned" it from 1.5" diam to 1.35" diam. The results are shown on the right. Real similar but now it works.

The bar fits the tailstock Morse taper. Then the holder body slides over it. Below is a picture, on the left, of the holder mounted to the lathe. It clears the cross slide table by an iota. The plans call for a handle which is shown on the right. I doubt it'll be needed. If it is I may make a nicer one, this one doesn't feel friendly to ones hand.