It took me a while to get it done, but I made myself an ER32 spindle chuck for my Logan 10” lathe. I bought the nut and a set of collets, then machined myself the thread on chuck body. I started with a 2-1/2” slug of what I think was leaded steel, then spent many hours turning most of it into small curls and chips. I’m learning the basics here, and this was my first effort at internal threading (1-1/2” x 8tpi spindle thread), metric threading (40 mm x 1.5 pitch for the nut), or turning a taper (8 degree internal to compress the collets). My hack pseudo machining skills only reared their ugly head once when cutting the metric threads (they are a touch loose, but very serviceable), but everything else worked out perfectly. I’m certainly happy with the results and will put it to good use right away.