[TheForge] Re: Advice? Air hammer die and anvil fit-up

Sat Jul 12 08:43:01 2003

What a good idea, Thanks for passing that on Bob.

Ralph

----- Original Message -----
From: "Bob Bergman" <[email protected]>
To: <[email protected]>
Sent: Saturday, July 12, 2003 8:26 AM
Subject: Re: [TheForge] Re: Advice? Air hammer die and anvil fit-up

> Mike ,If the upper area is flat, you can use a router with a carbide bit
to
> machine the lower area. You won't get it all but you will establish a flat
> that you can finish with hand work. This is a tip from Sid Seudimeier.
> ----- Original Message -----
> From: "Mike Spencer" <[email protected]>
> To: <[email protected]>
> Sent: Friday, July 11, 2003 11:32 PM
> Subject: [TheForge] Re: Advice? Air hammer die and anvil fit-up
>
>
> >
> > Charles wrote:
> >
> > > Cast Iron has great strength in compression, but has relativley poor
> > > strength in tension or shear ( the reason so many dovetails are
> > > broken off power hammers,
> >
> > Yeah.  The edge of the dovetail slot in the anvil is badly chipped,
> > too, but I think there's plenty to hold the die if I make a good,
> > full-length wedge.  It also has a key in the side opposite the wedge
> > that will prevent the die from moving lengthwise along the slot.
> >
> > > As far as lowering it, the traditional method would be a cape chisel
> > > to create grooves, followed by cold chisel, followed by files.
> >
> > Right.  I did know that.  I was hoping someone would have had
> > experience using a belt sander and could tell me it would be easier and
> > faster that either chisels or  grinders.  I *am* going to have to do
> > some chisel work on the keyway mentioned above.
> >
> > > M.T. Richardson's Practical Blacksmithing quotes a reasonable
> > > repeatable days work with a chisel to be a 3/4 " wide, 1/16 " deep
> > > groove 600" inches long in cast iron.
> >
> > Gee, that's 3 square feet of surface.  I'll have to fool with that a
> > bit.
> >
> > > Personally, for what you have left, I would use a 16 inch nicholson
> > > double cut file.
> >
> > I use small files and a 10" mill smooth or mill 2nd cut a lot.  I
> > don't think I even have a big mill/flat bastard.  Cut down two
> > ca. 5"x12" surfaces by 1/16 or so?  Seems like a whole lot of
> > filing. Maybe I've underestimated the power of big, coarse files.
> >
> > > ...no sparks or embers flying into every ship recess.
> >
> > In the case of cast iron, it's graphite dust everywhere.
> >
> >    "You're not just dirty.  You're *incredibly* dirty!"
> >
> > - Mike
> >
> > --
> > Michael Spencer                  Nova Scotia, Canada
> >
> > [email protected]
> > http://home.tallships.ca/mspencer/
> >
> > _______________________________________________
> > http://mailman.qth.net/mailman/listinfo/theforge
> > theforge mail list group photo site is
> > http://www.photoaccess.com
> > Login:  [email protected]
> > password:  anvil
> > ___________
> >
> >
>
>
> _______________________________________________
> http://mailman.qth.net/mailman/listinfo/theforge
> theforge mail list group photo site is
> http://www.photoaccess.com
> Login:  [email protected]
> password:  anvil
> ___________
>
>