PSN-L Email List Message
Subject: Re: Diamagnetic Graphite
From: ChrisAtUpw@.......
Date: Tue, 11 Jun 2002 11:55:05 EDT
Hi All,
In response to James Spottiswoode's graphite seis rig at
http://www.jsasoc.com/diamagnetic_suspension_seismomet.htm I took a magnet
setup into my local arts materials / stationery suppliers and went through
their stock of pencil leads. I can confirm that Faber Castell O.7 mm x 60 mm
2B leads are strongly diamagnetic. 12 off cost $1. None of the larger ~1/16"
leads that I tried were diamagnetic.
Cyanoacrylate glues seem to stick graphite more or less OK. Epoxy will
stick Graphite very well, but it doesn't like water at all. Cold Graphite is
covered with several layers of water and you have to drive this off first, by
heating it to more than 150 C before you can glue it with Epoxy. Possible
heating sources are hotplates on electric stoves and soldering irons. Epoxy
is mildly diamagnetic.
Regards,
Chris Chapman
Hi All,
In response to James Spottiswoode's graphite seis rig at http://www.jsasoc.com/diamagn
etic_suspension_seismomet.htm I took a magnet setup into my local arts materials / stationery suppliers and went through their
stock of pencil leads. I can confirm that Faber Castell O.7 mm x 60 mm 2B leads are strongly diamagnetic. 12 off cost $1. None
of the larger ~1/16" leads that I tried were diamagnetic.
Cyanoacrylate glues seem to stick graphite more or less OK. Epoxy will stick Graphite
very well, but it doesn't like water at all. Cold Graphite is covered with several layers of water and you have to drive this o
ff first, by heating it to more than 150 C before you can glue it with Epoxy. Possible heating sources are hotplates on electri
c stoves and soldering irons. Epoxy is mildly diamagnetic.
Regards,
Chris Chapman
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