[TheForge] Mechanical Power Hammer

Sat Jan 17 23:06:05 2004

Home made flypress huh, put some pics up maybe

----- Original Message -----
From: "Don Sinclaire" <[email protected]>
To: <[email protected]>
Sent: Sunday, January 18, 2004 1:57 PM
Subject: [TheForge] Mechanical Power Hammer


> I ordered the plans for the "Rusty" power hammer from Jerry Allen last
> spring, and got them promptly.  They consisted of a few pages of color
> pictures and some sketches of the overall hammer, some drawings of the
> details and a page of notes on materials.  No scale drawings or
> anything, since he assumes you are going to use whatever junkyard
> material you can find.
>
> I am still in the collecting phase- I have about � of the parts for a 20
> pound hammer and about half the parts for a 40 pound hammer.  The
> biggest problem is I don't really have the room for a power hammer in
> the garage.  I just want to build stuff to see how it works.
>
> The Rusty hammer uses 5/8 inch rod for various shafts and pins.  For the
> "bearings" and rollers he recommends heavy 5/8 tubing.  I have checked
> every type of pipe and tubing listed in Machinery's Handbook, in the
> scrap yard and in Metals Supermarket, and I can't find a reasonably
> close fit.  No tolerances  are mentioned in the plans, so I don't know
> if pipe that is 1/16 or 1/8 th inch oversize is acceptable or if it is
> going to rattle around and perform poorly.
>
> For the main bearings in the middle of the leaf spring, I was going to
> use a 1 inch shaft and ball bearing pillow blocks, but I don't think
> that is a good application for a ball bearing since it is such as small
> part of a rotation.  I recently bought a couple of bronze bushings and I
> will try to insert them into 1x2x4 inch steel blocks to form pillow
> blocks.
>
> The ram will consist of a 26 inch long piece of 1 �  inch square cold
> rolled steel in a UHMW guide assembly.  This is the only steel that I
> bought new.
>
> In the meantime, I got distracted by all the info on fly presses, so I
> built a small press.  I am just about ready to try it out.  I was out
> today at the scrap yard looking for something that would serve as a
> flywheel, but it was too cold and too much snow to check all the piles
> for something useful.  Didn't find any 5/8 tubing today either.
>
> If you want to discuss this any further, let me know.
> Don Sinclaire
> Western Canadian Blacksmiths Guild
> Edmonton, Alberta
>
>
>
>
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