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Found 16 results

  1. Huntonia

    Chunky Dolomite

    I tried to get some dolomite ready for prepping today, this is first time I've used the dolomite since I got more serious about the quality of my medium, and first time trying pure dolomite. The dolomite I have is raw dolocron from the pottery supply house, I couldn't find any pre-sifted on their website. I used a mortar and pestle, baked the dolomite and sifted through a 120 mesh. Very little powder went through the mesh and what did is still clumping and sticking to surfaces. I don't think it will run through the paasche like this. Here's the mesh after a spoonful of
  2. will stevenson

    Air abrasive system

    High guys, I’m thinking of getting a small prep system to keep me occupied as I have some stuff to prep, however I need to keep it cheap, preferably under £200, so far this is what I have, for £99 I have a compressor with stats of 6L OIL FREE 1.2KW 1.5HP 6.5CFM 4000RMp 116PSI and an alloy steel pen needle (£40) 3800rpm Frequency 0.28CFM Air consumption: 0.08(m³/min) Working pressure: 90Psi(maximun) Pen diameter: 18mm Pen length:155mm Air inlet size: 1/4" Weight: 135g ( This has the appea
  3. Ptychodus04

    Time Lapse Prep

    Over the years, people have asked for some prep videos. My new blast box allows me to conveniently set my phone on the glass and run a time lapse video. Unfortunately, the files are too big to post directly so the links below will take you to my Instagram where you can watch the riveting videos. They are short since this is a test. Video Video
  4. Ptychodus04

    Mini Blast Box

    What do you do if you have a slab that is too big for your abrasive cabinet and you live in Texas where the weather never cooperates? You build a miniature blast cabinet that sits on top of the slab. The box is 8”x10” and is 7.5” tall. This allows my microscope to sit on the slab and come into focus without hitting the top of the glass. It is lit by 4 foot long LED strip lights taped to the outside of the glass. The bottom has a bit of tee shirt stapled tomorrow it to make a bit of a seal and the side where my arm goes in has the sleeve of the shirt stapled on. The other side has a
  5. SULLY

    Best Blast Cabinet

    So if you were going to get a blast cabinet setup, what would you get? I know that a person probably needs two different setups to do it the correct way. And I apologize ahead of time if this has already been discussed. I don’t want the cheap stuff. I want quality that’s going to last. So I’m prepared to have to step up to the plate money wise to make that happen. Thank you everyone ahead of time! Sincerely, J
  6. Ptychodus04

    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.
  7. Today I received my @Vaniman Mobile Problast. I ordered it Monday and it shipped the same day. I had a few questions and Nathan was prompt and answered all my questions. It arrived on my doorstep double boxed and well packed. Upon unpacking, the unit was inspected and found to be in order. The unit came with supplied with a 1/4” barbed hose fitting. For the air inlet. In the package also came a 1/4” quick connector. Which was easily changed out. I connected it to the 1/4” tubing I picked up at the hardware store and conne
  8. Zenmaster6

    Air Abrasive Tool Help?

    Hi, I'm looking to purchase an Air Abrasive Tool, preferable online (or in a store that would sell them) I have been looking online but seem to get offers for tire maintenance and electronic cigarettes with dinosaurs on them when I look for "Air Abrasive Tool" on amazon / online So I have a few question for those who are experts to help out someone who has no idea about the tool at all. Any info would be helpful 1. Where can I get my hands on one? Can I go to a hardware store? Or can I buy one online? 2. If I buy one, I will want to use different PSI levels (if I ev
  9. Ptychodus04

    The Agonizing Wait

    Why does time grind to a halt the moment you place an order for a new prep tool? In a moment of weakness, my wife agreed to me ordering a new Vaniman abrasive blaster and a Paleo Tools Super Jack scribe. Of course, I'm not waiting around for minds to change.
  10. This is a pic of my middle son Casey's very first attempt at air abrasive work. Its a Phareodus that he found (in pieces) and is now cleaning it with 50% bicarb and 50% dolomite mix. Being a bit scared and nervouse I could see that he was being too cautious. I wasnt worried, I had the media flow turned down a little and the pressure was at about 40 psi. I had him start on the head bones so he could get a feel for it and not ruin anything. I think he's just getting a handle on it. RB
  11. About a month ago I went to Penn with two fossil buddies and they both found prone greenops. Sadly I did not find one. However both of these greenops were split between the positive and negative and probably were missing some skin as the material was quite flaky. For one of my friends this was his first ever find of a prone greenops. Prone greenops that are nicely laid out are a very rare find in the Windom shale. Most of the ones I have found from there or others that I have prepped for people are fully, partially enrolled or distorted. So to my fossil buddy this was a bit of a special find.
  12. I have been working on making my own air abrasive unit but the pen section I created it not precise enough being made of plumbing parts. I am curious if any of you have found a somewhat affordable pen. I have only seen tip replacements and pens with the abrasive feeder. Thanks
  13. 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
  14. I am looking for a Comco or similar air abrasive unit, have fossils available to trade, or part trade/part cash. Something like these.
  15. Ptychodus04

    Granton Material Hardness

    Does anyone know the Moh's Scale hardness for the shale/slate from the Granton Quarry? I have a prep that is going to require abrasive for the whole thing. The matrix just laughs at soda, so I'm on the hunt.
  16. Well I finally managed to acquire 5 kilograms of aluminum tri hydrate Al(OH)3 with 100% guaranteed to be smaller than 200 mesh and 90% guaranteed to pass through a 300 mesh screen. The tests I ran were as is; unscreened out of the bag. The tests were using a COMCO air abrasion unit at varying presures from 2 PSI to 90 PSI. I paid $35 for 5 kilograms (about 11 pounds). The material seems to be very consistant in size definately under 50 microns. A small particle size is good for delicate prep work. The data sheet that came with the product rates it as non hazardous which is a very good thing ,
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