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




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