Re: [meteorite-list] Repairing broken meteorites
Hi Dave and list Although I have no experience at repairing meteorites, I do know what some people do for opals that break. They use opticon 2 part epoxy. Its water clear and supposed to not (or be very good at resisting) yellowing. My suggestion then would be to mix up a small batch of epoxy and using a toothpick, apply some to the inner area of the break on one half after cleaning both well with a good alcohol. Then, on a flat piece of alum. foil, slide both halves together, watching for any epoxy to protrude from the crack on the (I'm assuming you broke a slice that was possibly polished) polished side. The excess can be wiped away with a lint free chemwipe or similar cloth moistened with ethyl/denatured alcohol. Then, you can leave the piece to dry. Use of a hot plate (the kind used to keep food warm, not one to cook with) will accelerate the curing of the epoxy.Good luck Mark Had a little accident with one of my meteorites [broke in half] and was wondering if there was any way of trying to repair it. The break seems to be clean and is there any type of; I hate to say this: glue that could be used very carefully to bring the halves back together? Thanks, Dave. __ Do you Yahoo!? Y! Web Hosting - Let the expert host your web site http://webhosting.yahoo.com/ __ Meteorite-list mailing list [EMAIL PROTECTED] http://www.pairlist.net/mailman/listinfo/meteorite-list __ Meteorite-list mailing list [EMAIL PROTECTED] http://www.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] Repairing broken meteorites
Hi Dave, I've used one of the several varieties of Superglue to repair two slices that have broken. Just apply sparingly so none drips over the edges and you'll be OK. Bob From: Dave Schultz [EMAIL PROTECTED] To: [EMAIL PROTECTED] Subject:[meteorite-list] Repairing broken meteorites Date sent: Sat, 19 Oct 2002 21:07:32 -0700 (PDT) Had a little accident with one of my meteorites [broke in half] and was wondering if there was any way of trying to repair it. The break seems to be clean and is there any type of; I hate to say this: glue that could be used very carefully to bring the halves back together? Thanks, Dave. __ Do you Yahoo!? Y! Web Hosting - Let the expert host your web site http://webhosting.yahoo.com/ __ Meteorite-list mailing list [EMAIL PROTECTED] http://www.pairlist.net/mailman/listinfo/meteorite-list __ Meteorite-list mailing list [EMAIL PROTECTED] http://www.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Repairing broken meteorites
Had a little accident with one of my meteorites [broke in half] and was wondering if there was any way of trying to repair it. The break seems to be clean and is there any type of; I hate to say this: glue that could be used very carefully to bring the halves back together? Thanks, Dave. __ Do you Yahoo!? Y! Web Hosting - Let the expert host your web site http://webhosting.yahoo.com/ __ Meteorite-list mailing list [EMAIL PROTECTED] http://www.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] Repairing broken meteorites
Hi Bob and list I'd just like to point out that super glues aregetters, they attract water at the molecular level and could cause some detereoration to a meteorite over time, how much and how noticable it would be I can't say, possibly very small, but from working with pacemakers, I do know that it attracted enough water to cause failure in the extended studies. Pacemakers are typically backfilled with dry nitrogen to insure that there isn't any atmospheric moisture inside the can. But the components outgassed enough moisture which was accumulated by the superglue (holding components to circuit board substrate) that it allowed ionic bridges to form across the lands ehich caused the failures.Mark Hi Dave, I've used one of the several varieties of Superglue to repair two slices that have broken. Just apply sparingly so none drips over the edges and you'll be OK. Bob From: Dave Schultz [EMAIL PROTECTED] To: [EMAIL PROTECTED] Subject: [meteorite-list] Repairing broken meteorites Date sent:Sat, 19 Oct 2002 21:07:32 -0700 (PDT) Had a little accident with one of my meteorites [broke in half] and was wondering if there was any way of trying to repair it. The break seems to be clean and is there any type of; I hate to say this: glue that could be used very carefully to bring the halves back together? Thanks, Dave. __ Do you Yahoo!? Y! Web Hosting - Let the expert host your web site http://webhosting.yahoo.com/ __ Meteorite-list mailing list [EMAIL PROTECTED] http://www.pairlist.net/mailman/listinfo/meteorite-list __ Meteorite-list mailing list [EMAIL PROTECTED] http://www.pairlist.net/mailman/listinfo/meteorite-list __ Meteorite-list mailing list [EMAIL PROTECTED] http://www.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] Repairing broken meteorites
--- Dave Schultz [EMAIL PROTECTED] wrote: Had a little accident with one of my meteorites [broke in half] and was wondering if there was any way of trying to repair it. The break seems to be clean and is there any type of; I hate to say this: glue that could be used very carefully to bring the halves back together? Thanks, Dave. Superglue, the freeflowing type works wonders. If it is a slice, get wax paper, and lay it out on a flat surface. Then take the two, or more pieces and set them, then push them together, the way you want them to fit. Now take the superglue and carefully flow some into the crack, If the pieces are pressed together beforehand it will be almost a hairline. Now capillary action will allow the glue to fill the crack. Push the piece tighter together to ensure bonding, and because this was done on a flat surface the crack should virtually vanish but seen only because of the glue. Add a bit more to fill the crack, press the pieces together a bit more, then allow to sit for an hour or so. Now you will have a superglue line along the crack that is very visible. Get some pure acetone (you can get this at any automotive supply) and use this with a lint free cloth to remove the excess superglue. And if the crack has well defined edges and is fresh, it will virtually vanish. If the pieces are from a whole specimen, put a substantial amount of superglue on the center of the break, then carefully put the pieces together, making sure that they fit tightly. Now if the crack is still visible, if you have some very fine dirt that matches the dirt from which the piece was found, then sprinkling it in the visible crack and rubbing with the fingers while the glue is still liquid will make the crack virtually vanish. Steve Schoner http://www.geocities.com/american_meteorite_survey IMCA #4470 __ Do you Yahoo!? Y! Web Hosting - Let the expert host your web site http://webhosting.yahoo.com/ __ Meteorite-list mailing list [EMAIL PROTECTED] http://www.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] Repairing broken meteorites
Hi Bob and list My understanding of epoxies is that they aren't hygroscopic as all of the superglues are (can't for the life of me remember the technical name for the stuff..something like cyanoacrilic adhesives or some such). I do know that they will dis-color given a moisture mobile stain such as iron or nickle. Epoxies come in many flavors and many do dis-color over time, so we use the two part epoxies that are resistant to uv and thus yellowing for thin sections, which there are quite a few and the price and shelf life are fairly good. Some of the uv curable epoxies also are coming into favor for such things as thin sections and optics, but I think its a very high cost to get something that in general does no better than a 2 part does. I also fell that at some point, one has to decide if a repair is warrented. Would the value decrease below the value of 2 or more smaller pieces? With all the hub-bub about fake trilobites (some enterprizing foreign dealers have taken to making casts of rare trilobites and afixing them to matrix which may or maynot contain others or parts of others of the same type to fulfill market demands and this has caused a lot of questioning by collectors of such things about whether to even repair broken specimens), I think one walks a fine line of devaluing a piece just for the sake of size. But, thats my opinion and not a rule. It may be just dandy as long as you mention a repair date on the display card somewhere so that a future purchaser knows exactly what they are getting.Mark Hi Mark, Very interesting information. I wish I had known this back when I did it. Do you know if epoxy is any different from the standard super glues in this regard? Thanks, Bob Subject: Re: [meteorite-list] Repairing broken meteorites From: [EMAIL PROTECTED] To: [EMAIL PROTECTED] Copies to:[EMAIL PROTECTED] Date sent:Sun, 20 Oct 2002 02:02:05 -0400 (EDT) Hi Bob and list I'd just like to point out that super glues aregetters, they attract water at the molecular level and could cause some detereoration to a meteorite over time, how much and how noticable it would be I can't say, possibly very small, but from working with pacemakers, I do know that it attracted enough water to cause failure in the extended studies. Pacemakers are typically backfilled with dry nitrogen to insure that there isn't any atmospheric moisture inside the can. But the components outgassed enough moisture which was accumulated by the superglue (holding components to circuit board substrate) that it allowed ionic bridges to form across the lands ehich caused the failures.Mark Hi Dave, I've used one of the several varieties of Superglue to repair two slices that have broken. Just apply sparingly so none drips over the edges and you'll be OK. Bob From: Dave Schultz [EMAIL PROTECTED] To:[EMAIL PROTECTED] Subject: [meteorite-list] Repairing broken meteorites Date sent: Sat, 19 Oct 2002 21:07:32 -0700 (PDT) Had a little accident with one of my meteorites [broke in half] and was wondering if there was any way of trying to repair it. The break seems to be clean and is there any type of; I hate to say this: glue that could be used very carefully to bring the halves back together? Thanks, Dave. __ Do you Yahoo!? Y! Web Hosting - Let the expert host your web site http://webhosting.yahoo.com/ __ Meteorite-list mailing list [EMAIL PROTECTED] http://www.pairlist.net/mailman/listinfo/meteorite-list __ Meteorite-list mailing list [EMAIL PROTECTED] http://www.pairlist.net/mailman/listinfo/meteorite-list __ Meteorite-list mailing list [EMAIL PROTECTED] http://www.pairlist.net/mailman/listinfo/meteorite-list __ Meteorite-list mailing list [EMAIL PROTECTED] http://www.pairlist.net/mailman/listinfo/meteorite-list
