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  1. Recently I bought a spinosaurus tooth that had obviously been broken and glued back together, poorly. Do you recommend any particular glue? I had looked it up, and the glue I have apparently will work. Will it?
  2. Pixpaleosky

    Repair green river slab

    I broke a large green river slab with fishes. Fortunately there are no small pieces. Which glue do you suggest to make it one piece again ?
  3. FossilNerd

    Best Glue for a Broken Meg?

    I went into my fossil room last night to get a little time to myself, but ended up finding a very unpleasant surprise. It seems that someone or something (I’m guessing cat or kids) knocked my Meg tooth off of its shelf. The resulting fall broke the tooth into 3 main pieces. The good news is that they fit together pretty well, and besides a few missing chips it should glue up nicely. This Meg isn’t anything fancy but it holds a lot of sentimental value as it was the first fossil my wife purchased all on her own as a gift for me. I’d like to repaired it as best I can and so am trying to decide what glue to use. I thought about using a basic cyanoacrylate glue but I think that would be too thin and just soak into the pores of the fossil. Maybe a thicker viscosity gel type? Or… would some sort of epoxy be better? Gorilla glue? Paraloid? Any suggestions would be appreciated!
  4. I_gotta_rock

    Dumb question of the day

    I've been prepping my fossils manually for years. Glue is my friend and my worst enemy. For some of my delicate micros, one drop is more than enough to encase the tiny object AND glue it to whatever surface on which it rests. I've succeeded in gluing my fossils to silicone mats, pin points, and my fingers through plastic gloves after the glue ate through the gloves. Lately I've settled on wax paper and lots of rolling the piece around to keep it from pooling when the glue invariably rolls off the surface of less porous shells. It still sticks to the wax , but at least the wax peels off the paper and comes off with a bit of acetone and a delicate touch. There has to be a better way to do this with less permeable surfaces. What do you do to keep from gluing your pieces to the table?
  5. I'm taking a feather from @Nimravis and starting a thread about repairing Mazon Creek fossils. I use the freeze/thaw method, but I do tap them lightly once in a while. That usually isn't what causes concretions to fall apart. Water creeping into the rock finds all the weak spots and sometimes a concretion basically shatters. Some localities are have hardier concretion than others. I have found that Pit 2, 3, and 4 have great preservation, but Shadow Lakes isn't referred to as Shatter Lakes for nothing. Super glue is nice, but I generally use Elmer's Glue as you can easily dissolve the glue in water and try again. Here is the first installment... a Macroneuropteris scheuchzeri from Pit 3. Collected last year during the construction on IL 129, but opened this year via freeze/thaw. I used Elmer's Glue on this one. Cheers, Rich
  6. Its been a minute since I've posted About 20 years ago while doing research online for fossil preservation I read somewhere that curators used "B-72" as adhesive and consolidate. so I did some digging and found a supplier that offered up free samples. I ordered some and after it arrived we were moving and it was packed away. the next couple of places I lived didn't afford me the space to do my hobbies and prep my fossils. Much time has passed and I am now able to haul out some of those fossils and work on them. I dug out the "B-72" I had ordered years before and started to look up info on how to properly mix my "B-72". Low and behold I didn't realize that there are other products that use the same handle "B-72". I now see its "Paraloid B-72" or "Butvar B-76" that are most commonly used for this purpose. So what's the difference?, and can this "Butvar B-72" be used? Is there or could there be any negative or undesirable effects from this stuff? will it ruin my fossils? If it can be used, does one dilute it the same as the other products? what W/V % should be mixed for consolidating vs using as an adhesive? Thanks for any input
  7. ischua

    Fish Preparation

    I was given some fish fossils years ago so that I could prep some thing that I don’t have around here. My first attempt sucked really bad. My second one turned out OK my question, do you seal them because they are extremely dusty and at what point don’t you bother with preparation because there’s really nothing left? Should I keep the upper fish or cut it off and keep the best one?
  8. Something that has been a long time coming... As I have no air tools for prepping fossils, I got the bee in my bonnet to try using bits of wood and glue to break away bits of matrix partially covering leaves from McAbee specimens that I collected years ago (before the gov't ban on collecting there). It worked pretty well on these few pieces I tried. The only difficulty came when the matrix to be removed was too thick and integrated with the surrounding matrix. Then it would only peel the thinnest layer off the top. Another round or rounds could eventually accomplish the task in this case, as I did in one instance. Glue used was Lepage's gel-type superglue. I let them cure for a half a day to a day before pulling. Soaking the stick in a jar of acetone frees the broken-off piece if wanting to retain it (as I did with the Ginkgo below). This could work on any number of similar fossils from e.g. Green River, etc. but I can't guarantee consistent results!
  9. Hey all, I have a fossil in my collection that has a fossil on matrix. I am unsure as to if this fossil was placed there unnaturally or not. Under black light no obvious signs of glue (nothing glows) Though the suspect part to me is what appears to be holes or bubbles on the rock at the base of the specimen. I guess it’s possible that the specimen was completely removed cleaned and popped back on, or it is possible that the specimen was found and later placed on this matrix. What are the chances though that this fossil and matrix go together and have never been separated?
  10. Hey Folks, Found this little piece in a construction area here in Cochrane. What is the best way to glue them together? Thanks Folks!
  11. JM260676

    Megalodon repair

    I need some help. So I have a megalodon tooth that I accidentally dropped and the enamel started flaking off. I had applied some super glue and when I added some, it dripped down. I tried washing it off but it left a white crust and I was thinking about using some acetone but I think it might damage the enamel itself. What can I do.
  12. ...or just a very bad idea? This is a partial Spinosaurid tooth. The other side of the tooth is completely missing. Areas of the tooth are covered with what I believe is glue mixed with sand or matrix. I really don't like the look of this Moroccon method to "improve" teeth. I already tried to rub the glue/sand mixture off with a acetone covered rag and the tooth looks a bit better than before (although the tip fell off and I had to reattach it with some superglue). Now I am thinking about soaking the tooth in acetone to remove all this glue/ sand mixture and then put it back together with just glue. Could this result in the whole tooth falling apart, as it might be consolidated with glue? What would you do, giving the fact that the tooth was very inexpensive but I still do not like the idea of destroying it? Thanks!
  13. Usually dig in rivers, so very newbie to this. First time to badlands. Watched a youtube and the paleontologist is squirting some kind of glue on a tooth before they try to remove it from the earth to prevent it from breaking. What is that glue?
  14. I'm going to attempt to clean up and glue the stromatolite I posted about the other day (yes, its a stromatolite). This will be my first rock gluing adventure. I've read several threads here, and watched a bunch of youtube vids. None of them really focuses on the actual process of consolidating unbroken rocks that are starting to come apart with a network of baby cracks. Please help? I have paraloid pellets andsuperglue (liquid form). I assume one goes along the crack with a dropper or brush and the glue magically gets down into the crack by gravity or capillary action? Is there a way to tell if it was effective (without actually trying to torque the rock at the crack)? How about removing the visible "seam" ? For larger pieces with multiple hairline cracks do you treat them one by one or something else? Some of this rock's "domes" are also loose. I'll do those with gel superglue once the base is stabilized. I might decide to make a vertical cut and maybe polish a face. Is that even possible with a rock trying to break apart? Feel free to answer the unasked questions too, and bonus points if you know of a video that zeros in on consolidation of a weak but unbroken samples. Thanks!
  15. I'm looking for suggestions and recommendations on how to repair this fossil I just found. It's got 4 crabs and an insect on the matrix, but it is cracking on top in several places, and it will fall apart easy if I'm not extremely careful. What is the best way to seal these cracks? Glue? What kind? Thanks in advance for help.
  16. Hi everyone, I went fossil hunting on the Yorkshire Coast a few days ago and picked up plenty of Dactylioceras ammos but not much else. Among them are these two which both cracked after an exploratory 'tap' with the hammer. I have never glued broken ammonites together for prep before but have seen it spoken about a lot. I have a few questions about how to approach this. Firstly, do you think these specimens are viable? The other issue is that I only have a Dremel to prep with so even if I glue them back together there will be an awful lot of matrix to remove.. Where do you apply the glue? On the whole surface of the broken fragment including the matrix, or just the fossil? Is there anything to look out for when prepping a glued ammonite? Which side of the ammonite should I prep from once glued? For the smaller ammonite, most of the specimen is on the smaller half of the rock, so obviously I would rather prep from that side in, but would going from the other side be preferable? I'm not sure I've made much sense here so please tell me if I've just spouted some nonsense! Ammo 1 Ammo 2
  17. Nipponites

    Remove glue from trilobites

    Hello, I have recently acquired three calymenes from Morocco, one of them was broken (or composited), and glued. To hide the glue, it was covered with mud, and after removing the glue I discovered an awful white glue. I tried to dissolve the glue by leaving the fossil in acetone for a whole day, then I left the it in alcohol for another whole day, and nothing happened. I finally soaked it in hot water but another time nothing happened. Does anyone know how to remove it? Thanks!
  18. Hello, I heard you can use "all purpose glue" that's apparently used in schools, mixed with acetone to make a cheap consolidant. I need a lot of the stuff for a pretty "far gone" fossil. I think I managed to find something, but I am still unsure whether or not I could use it (if it's the right type of glue). (What I need) (What I found)
  19. This may be familiar to most people who use paraloid dissolved in acetone. It is now familiar to me. Acetone trumps crazy glue. If you take a specimen held together in one place by crazy glue and submerge it in paraloid/acetone to consolidate it, the pieces that were held together by crazy glue will no longer be so. When you take your specimen out of the solution, the paraloid won’t have dried yet, and so you can’t count on paraloid’s adhesive qualities to compensate for the now-missing crazy glue. No big harm done, luckily. And now I know. I may have read this somewhere already on this forum, but there’s nothing like hands-on experience to remember a fact.
  20. I have a few pleistocene bones and large shell fragments that are fractured, and I'm unclear on the best way to repair them. I've read many topics on the forum about the importance of consolidation and materials to use, and I have materials on order, so I should be able to get started soon. But I'm a little unclear on the process if the bone is in two or three pieces. If you have a completely broken bone, should you consolidate the broken pieces separately first (i.e. in an acetone/butvar mix), then glue them back together with something like CA glue? Or would the consolidant make it harder to piece and glue them back together after they dry? Thank you, Brandy
  21. Over the years ive seen or heard of all kinds of glues used to fix/stabilize/repair fossils. One of the best ive found over the years is Cyanoacrylate. This glue comes in different viscosities. Its the thin viscosity that can be rather difficult at times. Ive seen guys use this glue for fish slabs that are starting to delaminate and it goes through the slab and onto their pant leg and glues everything together. Can be quite funny. Ive done the very same thing. What many people dont realize is that this glue can BURN! This last winter with -35 degree temperatures one of my bottles of glue cracked open and glued itself onto my prep bench. When I grabbed it and tried to pull it off the bench the bottom cracked wide open and started going all over the place! I immediatly grabbed a paper towel and tried to sop it up. HUGE mistake. besides gettting glue all over it instantly went through (wicking power) the towel and onto my thumb burning the tip in the process!! Blistard the tip of my thumb. Today the misses was lucky enough to walk into the garage and see me glue two fingers together. Burned too! I could tell you a lot more stories but you get the idea. Im sure most folks who are around fossils long enough have a story or two like this. RB
  22. Mantelliceras

    Big Ammonite Repair Adhesive

    Hello everyone! I managed to bring home this crazy guy, the problem is that it was so big it broke in pieces when extracting it. I've been using "Loctite Super Glue 3" (ethyl cyanoacrylate) for repairing my fossils until now and it worked pretty well. However, this one might be too heavy I'm afraid it wont be enough to keep the pieces together and it can be dangerous (since the whole fossil probably weights over 70 lbs). There are also some cracks I would like to fill, I heard a technique where you ground some matrix rock to dust and then use that powder to make a glue that has the exact same colour of the fossil, anyone knows about it?. To summarise: what is the best adhesive for heavy rocks? and, is there a way to fill the cracks so it won't look like it's broken? Thank you very much for your help. Here goes the picture of the fossil: Best regards,
  23. I know that a trilobite in limestone is found by breaking the rock, seeing its cross section in the pieces, and noting where it is. Then it is prepared by gluing the rocks back together and using jacks and air abrasion tools to remove the rock. My question: What sort of glue is used when gluing the rock back together? What set time does it have?
  24. Jurassicz1

    Super glue turned white

    So i put some cyanoacrylate on a trilobite and somehow water got on it. No idea how but it turned white. How do i fix this? Should i remove all the glue or just the White parts. Should i use acetone or a pin vise? If i use a pinvise how do i not damage the fossil?
  25. So i prep with dental picks. Do i need a dust mask for it? Also i was putting small drops of glue cyanoacrylate i think its called. What happens if u breath in a little bit of glue? Is it dangerous?
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