[TheForge] Re: Drilling jig

[Bob Ehrenberger]

Don,
It seems to me that if you drill before forming the ring it would be easy to
get the holes centered on the rod, but they may not be lined up with each
other. It would be all to easy to let the rod rotate and the holes wouldn't
line up.  So I would say to drill them after forming the ring.  There was a
jig in the blacksmiths journal several years ago that was kind of like a
steak tool that mounted to your drill press table. In your case it would
need to be 6" high and then jut out a half inch or so.  You could make a
radis on this to match the inside of the ring, and grind a grove in it to
keep it from slipping.  With the inside of the bar supported it should be
easy to drill. And once the jig is registered you should be able to progress
rapidly from hole to hole.

It kind of depends on how many of these you are going to make as to how much
work you want to put into your jig.

Robert Ehrenberger
Shelbyville, Mo.

Date: Mon, 4 Apr 2005 06:17:00 EDT
From: PlumDon at aol.com
Subject: Re: [TheForge] local source of ITC 100
To: theforge at mailman.qth.net


Looking for a technique or jig design to drill a 1/8" hole accurately
through the center of 3/8" round. This is for 1/8" spokes for a 6" wheel. I
could
drill before shaping into a wheel or after bending to a circle. ( I
recognize
I would have to re-drill after bending). I only have drill press  and hand
drills available to do the job. Any suggestions much appreciated.

Regards

Don  Plummer
Plummer Design Works