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Found 282 results

  1. Well, I’m finally getting to dig into my truckload of fossils from my Wyoming trip with @RJB so it’s my turn to open up a prep thread. I spent a couple hours today poking around to find the perfect fish to start with. The 18” layer never disappoints. This good sized Diplomystus has 2 Knightia on top of it. I’m going to try to save both but I’m concerned that the right hand one is covering most of the Diplo’s skull. If that’s the case, the little guy will have to go! This is after about 90 minutes of scribe work.
  2. First attempt!

    Went to Virginia a few months ago and came home with a few Chesapectin nefrens encased in solid rock. This one was only exposed as a ring of shell material in a ball of clay, calcite, iron ,broken shell and who knows what else. Normally I prep things with soft brushes, dental picks, a water pick, and very gentle fingers. That wasn't cutting it this time and I had to get aggressive. I spent 3+ hours with a rotary tool and zero practice. It's no museum piece, but it's not horrible. I could simply collect the same species, from the same member of the same formation, at a much closer spot, where the matrix is much looser, but I gotta learn sometime. Suggestions for next time?
  3. First attempt!

    Went to Virginia a few months ago and came home with a few Chesapectin nefrens encased in solid rock. This one was only exposed as a ring of shell material in a ball of clay, calcite, iron ,broken shell and who knows what else. Normally I prep things with soft brushes, dental picks, a water pick, and very gentle fingers. That wasn't cutting it this time and I had to get aggressive. I spent 3+ hours with a rotary tool and zero practice. It's no museum piece, but it's not horrible. I could simply collect the same species, from the same member of the same formation, at a much closer spot, where the matrix is much looser, but I gotta learn sometime. Suggestions for next time?
  4. Looking for material to practice, like the u prep site but not as much of a gamble
  5. Need advice on fossil prep

    I am hoping to get some advice on how to handle preservation prep on a recently found section of mammoth tooth. I have soaked the tooth, removed debris/algae with vinegar, rinsed thoroughly and have the tooth soaking in the toilet tank. I plan on following Harry Pristis' advise on consolidation found in previous posts. I am leaving on a 2 week trip and will not have time to dry the specimen and complete the consolidation before the trip. So the question is, should I leave the tooth soaking until I return or remove the tooth from the water and allow it to dry for the 2 weeks in a controlled manner (In a ventilated aquarium resting on sand)?
  6. Does anyone create fossil prep videos/ tutorials. Or do you know of any videos worth a watch? Would be great to expand my knowledge and enjoyable to watch others work!
  7. I probably should have started this thread years ago but better late than never. Ive got a bunch of fossil fish im going to prep out this summer. Im going to start with a Priscara serata that my sons friend found just last week. This serata has another right on top of it but missing some of itself so its going by by. This fish is from the bottom cap of the 18 inch layer and is in some very dense and very hard rock. The stuff I really like!!! A lot harder to prep than the split fish but nicer fish to say the least. Much harder bone too and can stand up against even pure dolomite! My kinda stuff!!! So, here we go........ RB This is the way it came up from the slab lift. You can see the other fish that is on top. The bottom one is about a 9 incher. This is almost 5 hours of work. The tail fin is a really hard prep job to say the least!!! but lookin real good so far. Luckily there is a tad bit of matrix between the fishes!
  8. Jay's Prep Blog

    Okay, so everyone else is doing one it looks like, so I figured I would jump into the fray.
  9. Crab prep finished(for now)

    I recently finished this pulalius vulgaris and wanted to show it off. I may work on it more in the future when I get an air abrasive set up, but for now I'm pretty happy with it. It turned out well considering when I dug it out of the bank it rolled down the hill in two pieces. It was my first major repair and I have only prepped 7 or 8 of these. I think the practice is starting to pay off, but having a cooperative crab goes a long way. I know it's nowhere near the level of skill you see elsewhere on the forum, but I'm pretty dang proud of this one.
  10. Glue!

    What glue do you recommend for fixing broken fossils?. The one i currently use is called gorilla glue but i'd like a colourless one.
  11. Cephalopod Preparation

    Found this cephalopod at Caesar Creek a month ago, just now got the chance to clean it up now that school is done. It's about 4.5 inches long and 1.5 inches wide. My best guess at ID is Cameroceras but if anyone thinks it may be something else please let me know. Looking at about 450 million years old. Before After
  12. Bison Prep

    In tandem with the phytosaur prep, I’ve also started a very challenging bison skull project. This specimen is sub-fossil bone and VERY soft. The bone inside the foils wrapping is a crumbling mess. First step was to wrap it in towels and let it dry for a week.
  13. Ive been thinkin about gettin one of these for years! I finally broke down and bought one, with extra scope lights. Right now its sittin on the kitchen desk. Just gots to clean up my prep bench now. I also have to find my micro scribes. Bought em years ago, never used them. I wonder where they are? Once I do fine em, I will be ready to join the Big Boys Prep Club. Maybe they will make me presidnt of the club. If so I will make my club goal to have happy hour! Ha!!! I should be a shoe in! RB
  14. Kane's Bug Preps

    Back in January while I was working through my prep queue, I was working on some Penn Dixie material. As a lot of this stuff is easy for me to get and fairly common, I wanted to get a bit fancy with some prep. The goal was to make a sideways mounted pedestal, and eventually square the tiny block. This was how it looked originally:
  15. First air scribe

    Hello everyone I have decided to start prepping with some mechanic aid and was hoping for some advice. The compressor I have runs at 8 bar, 120l/min and has a 6l tank. The air scribe I am considering is from Krantz and has the following technical data: 36000 beats/min air consumption: 25–30 l/min pressure: 3–7 bar weight: 250 g size: Ø 17 x 160 mm length of the tube: ca. 2,5 m with internat. plug-in coupling pointer: acute, hard metal, medium, 38 mm My first question is if it looks like a good choice for a first scribe, any other alternatives anyone can suggest? My second question is if I need an external component to control the maksimum air pressure? On the compressor I can adjust the pressure range it runs on from x-8 bar, where x is the minimum pressure i allow it to go, before it brings it back up to 8 bar, but the scribe prescribe a 3-7 bar running pressure. Any spare parts worth getting straight off the bat? Best regards
  16. Okay so I have some questions on what you can and can't do with your typical trilobite in shale fossils. To help direct the discussion, I am interested in setting a small trilobite in silver as a gift. I make silver jewelry both using PMC (Precious Metal Clay) and traditional cutting and soldering. So, first question: Can you use high percentage (70% or higher) rubbing alcohol to clean all the dust and debris before sealing a trilobite? If not, what should I use? (I know you shouldn't use water) Question 2: What sealants can/should you use on a trilobite? I am looking for something that will be both waterproof and help prevent chipping. Question 3: Does anyone have any experience exposing them to high heat? It is common in jewelry making for heat to be involved, from both direct flame and indirect radiant heat. Is there any kind of precautions I should take and if so, what? What type of heat did you expose them to and what was the result? Different minerals act differently so remember we are talking about soft-medium shale. Question 4: Do you have any other advice or precautions you can give me regarding the use of fossil trilobites in/from shale matrix regarding their use in mixed media projects? The information I gather on this will help dictate my methods and help me create a plan for my project. There are many different ways I can do this and want to get a better idea of my options. Thanks. Picture is not of the exact trilobite to be used. It's just a reference for the kind of material/fossil I will be using.
  17. S. S. White 6500 Rebuild

    I figured this might be a good thread in case it comes up for anyone else in the future. I recently purchased a used S. S. White 6500 model micro sandblaster unit for my workshop, which from here on out, I will likely refer to as a lab, as it now contains a higher dollar value of equipment than my media production office. Upon arrival, I discovered that it was not only pretty well used, but very poorly maintained, and was in fact, not functional. Since I got it for an absolute steal on the auction site, it's still worth every penny. After disassembling the unit, which I didn't have the foresight to photograph, I was fortunate enough to get on the phone with Joel, the president of Airbrasives, the subsidiary of S. S. White that manufactures these units. Joel was extremely nice, very talkative, and exceptionally helpful. We spent more than 90 minutes on the phone discussing the specific model, the parts that tend to wear out first, and what to look out for in terms of repairs and potential future pitfalls of maintenance. I figured that since I have had this experience and will be rebuilding this seized unit over the next few months, it might be a good project to share in case anyone else is able to get a similar bargain.
  18. So I just started practicing my fossil prepping with just some basic dental tools on this little trilobite! I just got sent a set of 4 small, unprepped trilobites and as my new air tools still haven't come in yet I thought I would play with the dental tools for a bit. I'm going very gentle and very slow. I am finding the curved edge of an angle pick to be pretty good for going around the edges without running the risk of gouging anything. It's very relaxing! I'm sure my tools will arrive before I finish freeing this little guy but I couldn't wait to play with him! I need to fully extract a couple for a small display project I have planned involving the trilobites and some microfossils in a tiny glass case. I am putting sand down on the backing and placing very small shark teeth around the edges and then arranging two trilobites, a tiny ammonite, and some VERY tiny shells! As I am determined to prep everything myself it's gonna take a while but I think it will look awesome when done. Say hi to George! (I named him George )
  19. Sand dollar prep

    Today I decided to try and prep a Sand dollar that was found by @digit and given to me at our March hunt at Cookie Cutter Creek. There was a good amount of matrix covering the top and bottom of this echinoid. While my main focus was uncovering the top portion I decided to also work on the bottom as well. Unfortunately I deleted the before pic by accident, but I took a pic that shows the pile of debris that I have removed so far. This is a work in progress so I will post more pics as I continue to work on it. First pic shows the top 2nd pic shows the bottom. As you can see from the pic all I have used so far is a pin vise and dental pic.
  20. Onnia prep

    So a while back I purchased an Onnia superba in matrix from @ReeseF. I decided the other day to put a few hours into it, as I'm getting really tired of prepping Eldredgeops, lol. Before:
  21. Trilobite for the prep table

    Hi all, I found this beauty not too long ago in Pauling Ohio. I am pretty sure it is some type of Eldridge trilobite. Any tips on how to prep it?
  22. Sometime ago, I acquired an ichthyosaur skull that was poorly prepped. It had been roughly grinded and had lost much of its surface details. This is unlike the Holzmaden-style ichthyosaurs that were professionally prepped from the beginning, resulting in a beautiful fossil with scleral eye rings and full teeth etc. It's the reason collectors get unprepped Keichousaurus and send them to professional preppers, with the resultant Keichousaurus being more detailed than the ones you see from the Chinese market. This guy here is as flat as a pancake and so it would take delicate work to remove the hard matrix without damaging what bones still remain. Thankfully, @steelhead9 was up to the task of prepping him further. There is no restoration here. I'd say he has done one heck of a job.
  23. Edestus Prep

    @DSMJake sent me this beautiful Edestus jaw to prep and I got the chance to work on it today. After a week of relaxing in the prep lab, chilling with the phytosaur, it came out of the box looking like this: To all appearances, it is simply covered in shale and the prep would require some simple abrasion. But as we all know, appearances aren’t everything! Under a good portion of the shale was a pile of pyritized shells! So, I abraided what I could and set to work with the Micro Jack. After the shells were gone, it went back into the cabinet for some more abrasive. After the abrasive, I blew the whole thing off and scrubbed the leftover soda off with acetone. The broken end of the bone had some cracking to deal with so they got a bit of super glue and the whole thing received a good consolidation. Why the whole thing you ask? Under the shale, the bone is also pyritized and the teeth are cracked with some enamel on the serrations missing. In order to lock all that down and reduce the risk of eventual pyrite decay, the whole piece got 2 good coats of thin Vinac. All this took a grand total of 3 hours of work.
  24. Nifty Abrasive 'Swabs'

    I just came across these nifty little things on the American Science & Surplus site, and thought they might come in handy sometimes for final touches on a display prep.
  25. Large Whale Bone to Stabilize

    I found this beautiful whale vertebra this weekend. It fell out of the cliff face just a few days ago and tumbled into the Potomac River (brackish?) just far enough for the waves at the tide line to gently lapped it clean. Gotta love it! It is currently soaking in clean water to get the salt and anything else out as much as I can, but I've never done anything this big before. I'm used to stabilizing little stuff and blocks of matrix that really just need a thick, hard outer shell. The little bones air dry quickly enough that I don't have to worry about moisture at the center, but this thing is 4 1/2 inches in diameter! I have both Paleobond and Paraloid on hand. Anyone have any practice at this?
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