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Found 140 results

  1. Greetings! Before I mess this thing up, I wanted to ask what I should do with this piece from Calvert Cliffs, MD (Miocene). It is about 13 by 9 inches and is pretty thick, about 22 pounds so I have no idea how much bone is actualy in there. When I found it, it only had about 1/3rd of the bone showing. Once I started picking away with my dental picks, more and more bone started showing up (I didn't get to the end the bone in any particular direction) but unfortunately the material is getting tougher to pick away. So my questions are, does anyone know what it is right now, should I continue prepping and if so, would my dental picks and other small tools be okay to use? If we think it will end up being unidentifiable material, I may end up keeping it in the matrix - I actually think it looks pretty cool with the shells and ray tooth. Thanks!
  2. I got my hand on a Crinoid calyx from somewhere in Texas (no location attached other than creek), and I’d like to know if this should be prepped any more, and if it is worth seeking professional help (I certainly can’t do it yet). It’s around four inches (I think, it’s not with me right now). Thanks for any advice!
  3. Removing Glue Residue

    Just curious what the trick is to removing that white residue that happens with super glue sometimes when it seeps out of the cracks when two pieces are glued and pressed together. I have a couple of hadrosaur processes that have been previously glued that I would like to clean up. I’ve seen people use acetone, but I’m not just going to guess that is okay to do. There’s no coloring or filler done on the specimens. So that’s not a concern. Any help would be much appreciated. Sincerely, J
  4. I have been reading through the threads about dolomite powder as a blasting medium for cleaning trilobites. Am I correct in my understanding that to get the range consistenty around 40 microns you need to run the powder through a 325 mesh sieve? I am assuming the dolomite powder available from places like the pottery supply house is not consistently in range of 40 microns, and will need to be sifted. Is there a place to buy 40 micron dolomite than anyone can recommend. (Someplace along the London to Toronto corridor would be ideal) Thanks in advance!
  5. My first foray into prepping

    I’ve been putting it off to long; I need to get prepping! And as practice I’ve started with what looks like the easiest piece, a whale jaw bit in a concretion I found. I need to dig it out and reattach it to the rest which was found already dislodged from it. I’ve been using a manual scribe and dang this stuff is hard! Most of the cliff sediment is loose but this concretion stuff is not easy to scratch up! Soaked it in vinegar over night, and it is slightly easier. I’ve put in a little less than two hours I think, and it’s progressing but not at a pace I like, so I used a gift card I forgot I had and bought myself a electric scribe, hoping it will help Once I got that finished, I am gonna try a larger whale bone in a huge (for me) concretion, which is gonna require consolidation. that’s gonna be a tough. I got a long list of other things I need to prep out and consolidate, crash course time! Here’s my progress thus far
  6. Hello all. I hope this is OK to ask... I was wondering if anyone would be generous enough to send me (Nathan) some "throw-away" matrix material or partially encased fossils so that I can attempt to prepare and document various methods for sandblasting them. We are currently trying to make improvements on our sandblasters for harder, more difficult matrix and I need samples for R&D. I would happily send this person the specimen back after it's been prepped if they would like and will give full credit in any publications we create using the sample. There would be videos showcasing the removal as well as lots of photos to share with the community during the process. Please feel free to DM me if you're interested in helping at all. Thank you! -Nathan
  7. Dicranurus elegantus prep

    I recently picked up this partial Dicranurus elegantus from the Haragan formation, Oklahoma. It was a fun prep! initially it laid flat at a funny angle (don't have a full photo), so I cut a base so it would stand on its own rather than lay flat, and removed a lot of matrix from the new top. I worked it down with my Aro, and used a abrasive unit when I thought I was getting close to the spines. Once I figured out the spine position I started with the Aro again, going slow and following the spines, switching back to the abrasive if I wasn't 100% sure where the spine was. Overall very happy with the results, not bad for a partial bug! Here is the before and after.
  8. Another Auction Prep

    @holdinghistory was the winner of the most recent prep auction that I held to support our great community here. He sent me a Diplomystus from the Green River Formation 18” layer. I finished up some other preps and got started on this today. Here’s how this started out:
  9. Another Pierre Shale Ammonite

    Finished another one of the ammonites. This one went a lot easier than the first after having a little more practice. Seemed to have a little better separation too. This one was almost entirely with my CP scribe, and just a little clean up and rock smoothing with the Aro. Here is the before.
  10. Ammonite prep

    Just finished up my first Ammonite prep. I had gotten a few of these from RJB a little while back, and finally getting around to them. I forgot to get a complete before photo, so here it is after some initial scribe work. Prepped with a CP-9361 and Aro scribes. Any constructive comments welcome too, this is the first ammonite I have ever prepped, three more to go so any pointers are welcome!
  11. Hello. I thought this little Macrocephalosaurus gilmorei would look awesome all prepped out. But the thing is, I have absolutely no prepping experience. My question is could this be prepped further to expose more of the bone? The whole block is only about 7 inches long, so it would be very meticulous work.
  12. Beginner prep tools

    I would love to have a go at prepping some nodules, because the hammer and chisel is pretty brutal. What would i need to set up an airpen? and would it work on Yorkshire fossils? If you have any recommendations for a beginner set i'd love to hear your ideas. Thanks
  13. Been a long time coming, we found this and jacketed it back in October and was waiting for a friend to help with it since it's a new one to me, but he's rather busy so Skye ( @Jesuslover340 ) and I have decided to just do it and get it outta the way. We've started some prep but will be finishing it and updating the thread tommorow, sleep beckons and I'll leave you guys and gals with some teaser pics. Goodnight! ps: for those who already know the answer, shh
  14. Bellacartwrightia whiteleyi WIP

    I wanted to enter this one into the IVFOM, but I technically collected it the last day of March, and I didn't take a picture of it before I started prepping it, so that's out. But I will try to chronicle the prep on here. It’s a decent-sized Bellacartwrightia whiteleyi that I pulled from the Windom shale just above the Bay View Coral bed at the site.
  15. So, I too, have finally decided to tackle a Russian bug. I have a handful that are in need of prep. I decided to start working on one that I had that is a nice size, but was pretty banged up to begin with, which is a really great thing, because for reasons that I can't quite explain I went on an excavation above the cephalon clear through the matrix and into the fossil without even knowing it until it was too late. Really a bummer that I did that, a very amateur mistake. BEFORE:
  16. Got this jacket into my prep lab yesterday night, and couldn't stop myself from starting in on it today. The specimen is likely a Gomphothere scapula, with most of the articulating end intact. The matrix is a very poorly cemented sandstone, when exposed to surface conditions it becomes essentially loose sand but a few inches deep it gets decently solid. Most of the prep I did today was just using a dull small chisel to push away the matrix
  17. Not long ago I received an unprepared asaphid trilobite, Asaphus lepidurus, with the intention of honing my still very green, nascent preparation skills. From my initial impression, I doubted that the left cephalon was complete, but was instead busted. Turned out it was all there! The reason it was being offered for sale at a significantly reduced price was because of some issues that would not make it a museum quality specimen, such as shell discolouration and some minor chipping. This was how it looked in its initial state:
  18. Kitadani Formation matrix prep work

    Hello all i have a Kitadani Formation matrix form Japan thats being prep and this was discovered in it i was wondering could it be bone or something else ?
  19. Seeking a burned out scribe tip

    Hello, prep friends! Does anyone have exact specs on the stylus/pins for the CP and Paleotools units? I just purchased a knockoff and this diamond pin that it came with is totally useless. I want to replace it, but have no idea how compatible it will be with anything else.
  20. Back at it for a bit, then... disaster

    A few weeks ago I realized it had been a few years since I fired up my little prep lab. I went through a career change and I've been super busy. Decided it's now time to take a little time for myself. So I bought a few unprepped fossils on that auction site and today I finally got to work. I started on this little gal from the Weeks formation and, of course, my air compressor decides it didn't want to come out of retirement and crapped out on me. Now I have to wait until I can get a new one, just as the fever was striking again. Oh well. Here's some pics. I forgot to take a before pic, so I had to screen shot the auction listing. It's the one on the far right. The seller listed it as Modocia whiteleyi.
  21. Disguising glue lines

    Hi all, I'd like to blend some glue lines on a piece I had prepped recently. I've read that painting over them with a mixture of elmers white glue, powdered matrix and water can give a fairly good, reversible finish and is cheap! I was just wondering what sort of ratios to go for if anyone has any idea? Cheers, Matt
  22. Hi everyone. Wondering if anyone out there is selling a used air scribe. I don't have a ton of cash available at the moment, but I could always include some trades in the deal. Doesn't have to be an Aro or a CP per se, just something I can use while I squirrel away enough to get the micro jack I'm after. My current tools work great on PD material, but won't work on the harder Moroccan material I've been getting in lately. Thanks in advance! -Jay
  23. I am looking for a Comco or similar air abrasive unit, have fossils available to trade, or part trade/part cash. Something like these.
  24. Recently picked up a cheap piece of matrix from the famous quarry in St Petersburg, Russia. I thought I'd give this one a go. It already had some damage on some of the axial portion, so I knew this one wasn't going to be an immaculate specimen when done. Here is what it looked like when I got started:
  25. Baculites

    I found what I believe to be baculites and was wondering if there were any suggestions on trying to prep, treat, or leave as is. The one still in the matrix is showing on the back side as just a small rusty dot, but is in direct line with what appears to be the tentacles that are shown oxidized and affixed to the matrix. Any thoughts would be welcomed and appreciated.
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