Fine points of drilling bridges

[Jon Page]

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I have a few Plexiglas blocks with 6 bridge pins mounted in for different
pin groupings and use this as a punch once the center and front lines
are established. I first drill straight down enough to start the hole with a
'numbered bit' then come back and drill at an angle. This avoids drifting.

Jon Page


At 08:45 PM 6/13/99 -0500, you wrote:
>
>>Here's what I've been doing.  I've been laying out the pattern on the fresh
>cap, marking it fist with a pencil mark, and then with a very sharp awl (not
>deep, just a mark I can see, perhaps 1/32" deep), and proceeding to drill
>with the standard drill bit from Apsco, by hand.
>---------
>>Brian Trout
>
>
>I have tried brad point, and hand sharpening bits to steeper angles, but
>have settled on my regular old set of number drills. I use an old nail set,
>ground down to just under the diameter of a #6 pin, and pointed a little
>steeper than the grind on a standard jobbers bit. I punch the bridge top to
>the depth of the point, maybe 1/16". The bit centers in the punch mark for
>me better this way than anything else I've found (making no claim to
>anything like perfection). If there is a better way, I'd sure like to know
>about it too.
> Ron 
> 

Jon Page,  Harwich Port,  Cape Cod,  Mass.  mailto:jpage@capecod.net
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