From my reading it looks as though a drill chuck for the tailstock would be an important thing to have.
The choices seem to be:
Buy the Proxxon one. It costs $45 (more than some entire drills), but it would be quick and easy and ought to work.
Find some other compatible model.
Figure out how to turn a taper, and mount one of the spare drill chucks that I have sitting around.
Regarding the latter two options, the first step seems to be figuring out what the tailstock taper is. The documentation with the lathe says that it is "MK1 (short)". Google has not been very successful at telling me what that might be; I am guessing that it might be a metric Morse taper.
The catalog says that the taper is "MT1 (short)". This is probably Morse 1 but shorter in some dimension by some unknown amount. I think MT1 is a 1:20 taper, so I suppose if I could turn that with sufficient accuracy I could keep making it smaller until it fit.
Does anyone out there know what this taper really is, or have any advice?
Bob