James, not sure how you're trying to do the drilling, for holes that small
you need a small precision drill press with an accurate chuck.  It would
probably take more skill than I have to do it with a hand held drill.  My
first thoughts are to try and find a real jeweler or silversmith or
gunsmith, they may have the equipment to drill similar holes.  Or possibly
an electronics assembly shop that does printed circuit board work.  It
wouldn't hurt to call machine shops and ask, but most of them around here
are more geared toward drilling 12" diameter holes.

Dremel sells a small drill press accessory for their variable speed Moto
Tools that might work.  I think you'd need to use a slow speed.  You'd
still need to devise an accurate method of holding the brass pieces while
drilling and if it doesn't work and you don't have other uses for the drill
press you're out $100+.

Bob


On Wed, Apr 4, 2012 at 9:45 PM, JAMES C ALLEN  wrote:

>   I know that this is a long shot, but does anyone have parts for an old
> Spregnether horizontal seismometer?  Specifically the lower wire hinge.
> The piece is a short wire with a round brass fitting at each end.  I tried
> to make it myself using piano wire and round brass stock.  But drilling the
> round brass stock to insert the wire into has been fraught with failure
> thus far since the very small drill bits I purchased at the hobby shop keep
> breaking,  Also, any advice on drilling an approximately .030 diameter hole
> in round brass stock would also be appreciated.  Do machine shops do this
> kind of work?
> James Allen
>
>
James, not sure how you're trying to do the drilling, for holes that sm=
all you need a small precision drill press with an accurate chuck.=A0 It wo=
uld probably take more skill than I have to do it with a hand held drill.=
=A0 My first thoughts are to try and find a real jeweler or silversmith or =
gunsmith, they may have the equipment to drill similar holes.=A0 Or possibl=
y an electronics assembly shop that does printed circuit board work.=A0 It =
wouldn't hurt to call machine shops and ask, but most of them around he=
re are more geared toward drilling 12" diameter holes.


Dremel sells a small drill press accessory for their variable speed Mot=
o Tools that might work.=A0 I think you'd need to use a slow speed.=A0 =
You'd still need to devise an accurate method of holding the brass piec=
es while drilling and if it doesn't work and you don't have other u=
ses for the drill press you're out $100+.=A0 


Bob


On Wed, Apr 4, 2012 at 9:45 P=
M, JAMES C ALLEN <jcallen1@...........> wrote:





I know that this is a long shot, but does anyone have parts for an old=
=20
Spregnether horizontal seismometer?=A0 Specifically the lower wire=20
hinge.=A0 The piece is a short wire with a round brass fitting at each=20
end.=A0 I tried to make it myself using piano wire and round brass=20
stock.=A0 But drilling the round brass stock to insert the wire into has be=
en=20
fraught with failure thus far since the very small drill bits I purchased a=
t the=20
hobby shop keep breaking,=A0 Also, any advice on drilling an approximately=
=20
..030 diameter hole in round brass stock would also be appreciated.=A0 Do=20
machine shops do this kind of work?

James Allen


=A0