[Healeys] Hole cutting

[john spaur]

Peter,

The method below works well. However, you can use a larger drill bit, 
say 3/16" if you move the bit center point an appropriate distance 
away from the desired finished inside diameter. After drilling a 
series of 3/16" holes, change the bit to a 1/4" bit and carefully 
re-drill the holes. This will do most of the cutting and you will 
then need to file. I just made the large steel lock washer on the 
front of the transmission bearing using this method.

John

At 06:13 AM 1/21/2013 -0800, Steve Gerow wrote:
>By hand method: draw the holes as you want them with a compass on a piece of
>paper. Glue the paper to the dash with contact cement or spray glue.
>
>Take a small drill and drill a series of holes inside of the circles as
>close together as you can get them. Maybe a 3/32" drill with 1/16" between
>the holes. Take wire cutters and cut the gaps between the holes, removing
>the nasty, jagged center disc which looks like a ninja throwing star.
>
>Take a half round file or "barrel" sanding drum and file/sand the openings
>outward until the instruments fit.
>
>  >>>
>
>Peter Linn wrote:
>
>. Anyone got any ideas for
>making a neat job of this?