[TheForge] Drilling angles etc

[Woolley]

What you guys are describing is working metal on a table.  The problem 
I'm trying to solve is drilling into an angled concrete wall like you 
would find on either side of a stoop in the city.  A one time shot to 
get it right.





Mike Spencer wrote:
> Marc> The only trick I've used that works is to start the holes going
> Marc> in straight.  Then when the hole is deep enough to "catch" the
> Marc> bit at the desired angle, I stop and rotate the table or drill
> Marc> head at the angle.
>
> It may work even better if you:
>
>     + Start the hole, with, say, a 3/8" drill, at right angles, but
>       just enough to create a dimple, and just a tad -- 1/8" or so --
>       "uphill" of the desired starting point,
>
>     + center-punch the correct location inside of, on the side of, the
>       dimple, 
>
>     + reset the workpiece to the desired angle, and
>
>     + drill a pilot hole, say 1/8" or so, where you center-punched.
>
> It will be easier to keep the 1/8" drill from drifting out of the
> punch mark than it would be with your final-sized drill, which latter
> has a much wider chisel edge. And because you're starting the pilot
> hole on the side of the dimple, it will be closer to right angles
> anyhow. 
>
>
> FWIW,
> - Mike
>
>