[HBR] HBR-13 Progress

Walt Hutchens waltah at earthlink.net
Sun Apr 6 20:55:36 EDT 2014


Whitebear1122 said:

> Are you able to get accurate location for large bits like 3/8" or
> 1/2"?  The small ones are good but I seem to get more error with the larger ones.

With the big ones on a soft aluminum chassis results aren't going to
be very good.  Depending on the precision that's needed I may use a
reamer or a file to enlarge a 5/16" hole.  At 1/2" and up I have
socket punches for most sizes and I drill a bit oversize for the punch
screw and center it using the marks that are (usually) on the sides of
the punch.

Walt
KJ4KV



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