[TheForge] Tumbler

Mon Jul 29 08:57:00 2002

You probably want to slow it down a bit Frosty. With a drub that size 25 to 
30 rpm is what I've seen used.  Too fast and the stuff just stays on the 
wall and doesn't tumble. Too slow and it just rolls over on the bottom. 
It's gonna be noisy no matter what. <grin>
<SNIP>
>  The motor is mounted to a
>hinge plate under the drum and the belt will run from a 1" drive pulley
>around the drum itself for a (probably too fast) 74 +/- rpm. If I need to
>slow it down I'll have to make up a jack shaft. (I say that like it's a
>problem but I'm just cheap and lazy. <grin>)
>
>I'll put it outside the "shop" under a roof of some kind so the noise
>doesn't drive me crazy.
>
>Frosty
>------------------------
>If it ain't forged
>it ain't real.
>Wrought iron is.
>The FrostWorks
>
>Meadow Lakes, AK.
>
>
>----- Original Message -----
>From: "Bob Ehrenberger" <[email protected]>
>To: "theforge" <[email protected]>
>Sent: Thursday, July 25, 2002 8:30 PM
>Subject: [TheForge] Tumbler
>
>
> > I finished my tumbler today and plan on testing it tomorow.
> >
> > When faced with the prospect of power brushing 230 fence pickets I decided
> > it was time to get serious about a tumbler. I had scavenged a section of
> > steel pipe a couple years ago to make one but it wasn't long enough, so I
> > optioned for an old water heater core. While trying to figure out a
>mounting
> > and turning mechanism I remembered that I had a device for cold twisting
> > bars in the weeds by the barn. I had gotten this device six years ago in
>the
> > deal for my trip hammer, and had never set it up. To my amazement the
>thing
> > wasn't locked up.  All I needed to do was make a special tail stock for it
> > to support the end of the tumbler.
> >
> > I mounted a 5/8" bar down the center of the drum (water heater) to support
> > it. The only detail yet to work out is what to use for a fin inside the
>drum
> > to keep the stuff from just sloshing around at the bottom. I would like to
> > put in a couple pieces of small angle iron, but all I have is big angle
> > iron. So maybe I'll just use a piece of square stock.
> >
> > I timed it, and it turns at 20 rpm which may be a little slow. I'll see
>how
> > it works before I dink around with the gearing.
> >
> > Now I have to find a place for it. My shop is already pretty full which
>was
> > part of the reason I never set it up. Also if it turns out to be dirty and
> > noisy I may have to build a shed for it to keep it out of the shop. First
>I
> > need to get through this job.
> >
> > Bob Ehrenberger
> > Shelbyville, Mo
> >
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Michael D. Horgan , [email protected]
http://members.aol.com/lughaid/
posting from
  A BRAZEN FORGERY
Blacksmithing and Metalwork
Claremont, Ca.