Enlarging a bushing hole?
"Michael Horowitz" wrote in message
...
On Mon, 27 Aug 2007 17:51:37 -0700, "Rich S."
wrote:
"Michael Horowitz" wrote in message
. ..
I find myself having to enlarge a bushing's ID by 1/16ths to 3/8ths.
My concern is I don't know how to insure the 3/8" bit is aligned with
the axis of the hole. Centered is good, but I'm more concerned with
the alignment.
Suggestions? - Mike
Chuck a rod in the drillpress the same size as the existing hole. Slip the
bushing on the rod and clamp it to the table. Replace the rod with your
new
drill or reamer. Make shavings.
Rich S.
And what if the hole is whollowed out such that rod or any drill bit
you have doesn't touch the bushing walls evenly? - Mike
You can use a light weight rod and bend it slightly, so it traces the OD of
the hole, as the shaft rotates.
Machine shop supplies sell a "wiggler". It chucks in a drill or mill and has
a pointer about 2 inches long mounted on a ball. The ball fit allows you to
bend it easily, and many times over in daily use. But bending an 1/8 welding
rod will perform the same function, if you are patient with bending it.
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