I have been using the lathe off and on since I published the final video...its still more of a work in progress at this time. The current chuck is a 5" but I have an 8" waiting in the wings should I need the extra size. I am certainly limited by rigidity...probably the only limiting factor for most lathes, however for the work I do (1" and smaller metals) most of the rigidity / vibration problems are not seen. I'm confident with a better headstock bearings (taper rollers of some sort) you could push this machine much MUCH harder.

Zero cracks in the cast, can't ever see turning stresses causing cracks...temp cycling over winter / summer and humidity may be the only issue (even then I highly doubt I'll see problems). If the end goal is low cost with the largest lathe possible then I would surely go with concrete...should your budget allow for it an epoxy granite machine would probably work very nice as well, and give you a few nicer finishing options.


Thanks for the comment!