Nope, I didn't even realize that was something people were doing - and I'm
wondering why (though I'm guessing something to do with the strength of the
bolt head for torquing?).
Maybe a thicker drill bit wouldn't have a problem bending and breaking so
easily, almost seems like you're asking for trouble by using that guide and
with such a small bit.
> From: TR3driver@ca.rr.com
> CC: shop-talk@autox.team.net
> Date: Mon, 4 Feb 2013 11:02:58 -0800
> Subject: Re: [Shop-talk] Safety Wire Drill Guide
>
> > Not sure if there's any secret here. I've drilled a dozen
> > 1/8" safety wire holes in Grade 8 bolts before using a single
> > cobalt bit in a drill press, and without the tool you linked
> > to -
>
> But did you start on the corner of the bolt head? That's what the
linked-to
> tool is designed to do; and it has a guide right next to the bolt head to
> hold the drill on-center to the corner. Seems to me that even a cobalt bit
> is going to grab the corner of the bolt head and bind or break; unless you
> grind a small flat for the bit to start into.
>
> -- Randall
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