On 11/12/2011 05:57 PM, andy pugh wrote: > On 12 November 2011 23:21, Jack Coats<j...@coats.org> wrote: >> There is a yahoo group re-developing making a lathe from concrete. >> They are baseing their stuff on a guy that made lathes for turning >> large projectiles for the Navy. > This appears to be that yahoo group, and that lathe. > >> then >> poured a low temp metal alloy he developed (formula is lost) > Possibly one of these? > http://www.alchemycastings.com/lead-products/fusible.htm > > Cerrosafe sounds fun, it shrinks on initial cooling so you can remove > it, then expands back to the exact original dimension. > I have about 15 lbs of planer knife babbitt, that I got from a salvage yard. It's a low melt alloy, that doesn't shrink when poured.
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