[AT] Brake band material

John Wilkens jwilkens at eoni.com
Thu Jul 5 16:04:25 PDT 2007


Yeah, I think I can do that.  Hadn't thought of using two plates and 
a pilot.  One thing I can't visualize  is the "straight cutting 
edge"  you mention.   Thanks!   John W.


At 01:46 PM 07/05/2007, you wrote:
>You asked how, so here is what I did. Fair warning, I'm a machinist so it's
>not quite as complicated or time consuming as it might seem.
>  I wanted to use the same type of rivets as possible on my tractor so I
>needed a counterbore. Some rivets are countersunk, and not all are at the
>same angle. Anway I made a counterbore tool out of a drill bit using a
>pedestal grinder, lathe and dremel tool. I roughed the end of the tool to
>serve as the pilot on the pedestal grinder. Then I put it in the lathe and
>clamped my dremel with a cut off wheel in the tool post. I turned the lathe
>and the dremel on and started grinding. Instead of putting any relief angle
>on the tool I left the cutting edge straight--since I would be doing this in
>the drill press I didn't want it to grab. I set up two plates on the drill
>press. The bottom one had a hole about the size of the pilot. The top plate
>was made larger to clear the tool. I set a gap between the 2 plates about
>.010" thicker than the material so I could slide it thru. I cut the drill
>press off between holes so I could use the pilot to line up the lining.
>Worked great--hole depth didn't vary .005". If I'd have thought about it
>earlier in the week I would have made the tool at work--it would have been
>faster but not near as much fun!
>
>Oh yeah, I clamped the lining to the bands and drilled all the holes first
>with a hand drill.
>
>John
>----- Original Message -----
>From: "John Wilkens" <jwilkens at eoni.com>
>To: "Antique tractor email discussion group" <at at lists.antique-tractor.com>
>Sent: Wednesday, July 04, 2007 11:59 AM
>Subject: Re: [AT] Brake band material
>
>
> >  Can you tell me the procedure for
> > countersinking the lining for the rivets?     John W.
> >
> >
>
>
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                    In the wide-open spaces of NE Oregon
   





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