The best way to remove rust without damaging the base metal is with
electrolysis. All you do is get some stainless steel for one electrode, a large
power source (like an industrial battery charger, one for forklifts should be
fine), water and simple chemicals, and a vat large enough to completely cover
the item...
Seriously, the iron oxide on cast iron is often a self-healing oxide like
aluminum oxide. It is not as destruction as oxide on steel.
I'll bet you will be surprised at how good the lathe will work when it is
overhauled. Bet you will also be surprised at how much work it will be to do
it. You will need a need motor, you will need to disassemble the lathe into
about 12,000 pieces and clean and derust nearly all of them. Many will need to
be filled and painted, etc.
However, a Monarch is arguably as good a lathe as God ever saw. Very, very
nice. Hope you do it and keep us informed. It is a worthy project in itself.
Mark V.S. in Austin, TX
-----Original Message-----
From: Scott Hall [mailto:sch8489@garnet.acns.fsu.edu]
I've stumbled across a (very) used monarch lathe locally. the ways are
rusted, though it's just surface stuff. no chuck, tooling etc.
soooo, after a search on the 'net (where I found lots of them for sale,
but none of the info I'm after), I thought I'd try y'all.
anybody know anything about the company, like where or if I can get
replacement parts? I suspect in addition to the chuck it'll need a new
motor, and though that doesn't have to come from monarch I suppose, I'd
like to know what it started with.
this thing was built in 1946 and is pretty stout. I've got a
'manufacturer's number' that doesn't pull as anything on google (long
shot, but still)
oh, and anybody with more experience wanna opine about the rust on it? I
was tempted to just walk away--after all, this thing's gotta measure
accurately, but it rubs off on your hand pretty well. it seems to be
frozen as well, maybe from rust but it could have just been locked in
position--I couldn't get around to tell. if anybody's dealt with this
before, is this as bad as I think it is, or might I just clean it up and
go with it? I figure since I'd be measuring off that wheel even a few
thousandths lost to rust would be a Bad Thing, but it's well true that I
know just enough to be dangerous. I'm hoping a check with the
cognoscenti will clear me up.
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