[meteorite-list] Hard to Polish Meteorites - Any Ideas?
From: Ed Deckert <edeckert_at_meteoritecentral.com>
Date: Fri, 28 Oct 2011 11:09:29 -0400 Message-ID: <332E0430AA4F4F2F859D6A1C080E6F47_at_MAINPC> Hi Mike, Perhaps the Hup?'s "trade secret" is using diamond polishing media at a much higher/finer grit than you are using? It may be worth a try. Adam & Greg, can you share your secret? Ed ----- Original Message ----- From: "Michael Gilmer" <meteoritemike at gmail.com> To: <meteorite-list at meteoritecentral.com> Sent: Friday, October 28, 2011 9:06 AM Subject: [meteorite-list] Hard to Polish Meteorites - Any Ideas? > Hi List, > > Some meteorites are hard to polish or just won't take a proper polish. > Allende is one example that comes to mind readily. > > I've got an endcut of NWA 801 CR2 that came from the Hupe Collection. > It has a wicked glossy polish on it that accentuates the chondrules. > > I'm working on some CR2 slices that need polishing and they won't take > a decent polish. I can get the saw marks out, but beyond that I can't > get a polish to take. The more I try, it just muddies up the matrix > and subdues the features. The metal fleck and rings around the > armored chondrules come out nicely, but the rest of the specimen > becomes muddy and the chondrules fade into the matrix. What am I > doing wrong? This particular CR2 is similar to NWA 801, but a little > more weathered. Could that have something to do with it? > > Do the Hupes have some magic trade-secret technique? Or am I > overlooking something obvious? > > I started out with 320 grit and then progressed to 400, 600, and 800 > grit - hand sanding, dry, on wet/dry sandpaper. > > Best regards, > > MikeG > > > --------------------------------------------------------------------------------- > Galactic Stone & Ironworks - Meteorites & Amber (Michael Gilmer) > > Website - http://www.galactic-stone.com > Facebook - http://tinyurl.com/42h79my > News Feed - http://www.galactic-stone.com/rss/126516 > Twitter - http://twitter.com/galacticstone > --------------------------------------------------------------------------------- > ______________________________________________ > Visit the Archives at > http://www.meteoritecentral.com/mailing-list-archives.html > Meteorite-list mailing list > Meteorite-list at meteoritecentral.com > http://six.pairlist.net/mailman/listinfo/meteorite-list Received on Fri 28 Oct 2011 11:09:29 AM PDT |
StumbleUpon del.icio.us Yahoo MyWeb |