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  1. I've been recently looking into working with b72 for preserving and strengthening some of the pyrite and coal fossils I have. At the moment, I have a few questions regarding this topic: 1) For DFW folk, do you recommend any stores that sell b72 in the DFW area? For others, do you recommend any reputable online stores that ship it? 2) Should I store acetone in the original container I purchased it in? What is the safest part of the house to keep it? 3) What are any general tips/tricks you wish you knew before you started using b72? Feel free to answer as few of
  2. Hi all, I am finally getting ready to proceed with stabilizing the specimens I found in this trip: They are basically big sandstone steinkerns, now fully dry. They were found in ferrous sandstone concretions surrounded by sand. The matrix is soft , pieces can be broken off with fingers. I was advised to brush ammos with a PVA solution, but then I thought what if I use Paraloid instead? So the questions are as follows: 0. Is it worth it? 1. If so, what solution should I use? 2%? 5% or more? 2. How much will be required? (the biggest ammo is about 40
  3. Hello! I'm considering coating some of my delicate fossils in Paraloid (mixed with Acetone), to seal them and protect them for the future. How long would a typical, let's say, Green River fish take to decompose without such or similar techniques applied? I am very wary of doing irreversible acts to the rocks, so, how would one de-Paraloid a fossil, and would there be any damage? Just, any tips whatsoever would help, I'm feeling pretty inadequate about all this
  4. 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 t
  5. Hi there, I picked up a couple of pieces of flaky shale with some bivalves and ammonites from Whitby a couple of days ago and want to use a paraloid-B72 solution to consolidate them. I’ve never done this before so am hoping someone can share some advice. At the moment I’ve got them soaking in water to remove any salt and in a day or two I’ll remove them to dry naturally. I want to do a bit of prep with some dental tools and then consolidate. My main question is do you think I should soak them in the paraloid or brush it on? In terms of dilution I want
  6. Jurassicz1

    How to preserve fossils?

    So how do u preserve fossils like shale/limestone and teeth? I heard something about paraloid? Where do i buy it? And i have washed some fossils with tap water when i started fossil hunting. And some say they can get discolored with sunlight How do i know that? I got a old trilo that now have alot of dots of matrix they were not dried in sunlight but the rooms light was turned on i used normal hand soap.
  7. I would like to know what brand of acetone is the best to use with paraloid b72, or if they are all the same. I would also like to know how to mix it, and what percentage of paraloid b72 to use. The fossils I find here are often very dry, brittle, and have cracks in them. I would like to use the paraloid solution to coat the surfaces.
  8. Dracarys

    Acetone soak

    Hi all. I have a piece of matrix that has been consolidated in paraloid. How long do I soak it in acetone to dissolve the consolidation? Thank you in advance.
  9. hi guys i need to stabilise quite a lot of sth stuff at the moment so am need of quite a bit of paraloid b-72 and acetone, maybe 200g paraloid and 500 g acetone, im not quite sure on what ratio to use so any help/advice would be great, in return, ask for any kid of fossil, i have quite a wide variety that i can offer
  10. Where do you guys buy your prep supplies? I've looked on line and have mixed feelings about some of the places that do offer this kind of stuff. I'm sure people here have their favorite sellers who won't rip a rookie like me off. Thanks!!!!
  11. I would like some paraloid B72 solution for protecting fragile fossils. I have found the paraloid B72 crystals for sale. What percent solution should be used for fossils, using acetone as a solvent? Is there any special way to mix it? Is there a way to safely store it?
  12. Dozens of articles written about stabilizing crumbly specimens but I have yet to find someone who can make me feel confident about a solution. I kayak rivers and find tusks and crumbly bones on the sandbars. They are wet or at least half wet from contact with the ground. The stabilizer must dry quickly, be reversible and work on a wet specimens. Currently I leave most of them where I find them because I cannot come up with a good solution.
  13. JohnBrewer

    Paraloid B-72 Practical Tips

    Paraloid B-72 Practical Tips PDF Paraloid_B-72_Practical_Tips_for_the_Ver.pdf
  14. Found a paper today using Paraloid B-72. It’s a very useful read for any that prep
  15. triplefacepalm

    Vertebra Prep Questions

    I would like to try to prep a whale vertebra I found, but I have a few questions before diving into the preservation part. My questions come in 2 parts: Paraloid suggestions and matrix removal questions. Paraloid: For something this big, should I attempt to find a container and dunk the whole thing in the paraloid solution, or should I use a brush to go around the whole surface? Any suggestions for the ratio of paraloid to acetone? 1:10? 1:20? I've read different ratios thrown around, but I'm not sure what is best for which situation. Matrix removal: Ther
  16. Yoda

    Sulphurous patch?

    So I was treating my collections from Betteshanger trip with Paraloid. Noticed that this specimen has this large soft yellow patch. Looks like some sort of sulphur compound? How should I treat this? Just cover the whole rock with Paraloid? Or should I remove this first?
  17. connorp

    Acetone additives

    I just received what I thought was pure acetone for mixing with Paraloid B72. However there is an additive of denatonium benzoate, which I assume is a required bittering agent to prevent consumption. Will this cause any issues?
  18. DanKurek

    Paraloid Glue

    G'day everyone! My dad and I have tried making some paraloid glue by mixing 25% paraloid with 75% acetone. The paraloid has been dissolving for a few hours and a thick solution with the consistency of wood glue has settled to the bottom. Do we use this thick solution at the bottom to glue and strengthen our fossils? Thanks, Dan
  19. I am not particularly a fossil collector, I have come across some cheap Spinosaurus teeth. I know they probably aren't particularly interesting from a collection standpoint, but I think they are quite fantastic. I want to make them as hard and protected as possible, for the sake of ornamentation. I hope that isn't heresy. Point being, I am comfortable with using products that may not be appropriate for fossils that are of higher value and going on a shelf. I've read some about Paraloid B-72, and that it can be mixed (at a ratio of 1 paraloid/10 solvent??) with something like acet
  20. I received an awesome set of Moroccan matrices from @caldigger (thanks again!) that included a cracked elasmosaurus tooth. I didn't consolidate the tooth before prepping, as the matrix surrounding the tooth was far harder than the rest of the block, leading me to believe it had been sufficiently consolidated. It split at the crack whole handling it before prep work even begun, so I continued with the rest of the tooth and got the rest out pretty cleanly. The fossil isn't valuable, so I'm not too worried about perfection! Its all part of the learning experience for me. My question i
  21. LiamL

    Mixing Paraloid

    JohnBrewer kindly sent me some paraloid, i've gone out and bought some 98% acetone and a glass jar. How much Paraloid should i put into a small coffee jar? Thanks
  22. Hi friend, I am working on a cluster of shark vertebrae and need advice on preservation. I have decided to clean up the whole sample and expose some of the fragments of different bones which are in the matrix surrounding the vertebrae. I need to stabilize the whole sample after I finish but I can't get here in Czech republic Butvar b76 as many people recommend. Can I use PARALOID B72 or AKEPOX 1005? Will I be able to apply paraloid with a brush and is it even suitable for this? Can you please advise or recommend other product?
  23. thelivingdead531

    Paraloid on wet matrix and fossils

    I’ve tried searching through the forum and it seems that there are mixed reviews about using paraloid on wet specimens. I have a couple of chunks of wet sand/clay with bivalves and gastropods that are extremely fragile. Everything will crumble with the slightest touch. So, what is the general consensus on using paraloid on wet specimens? Should I risk it and dry them out first?
  24. JohnBrewer

    Non glossy consolidation

    Folks, I need an archival consolidant that doesn’t dry glossy. The problem is the plant material I want to protect from flacking is sorta clay/soft shale. Even 5% w/v Paraloid in acetone is giving a glossy appearance. Not too bad on the fossil but looks horrible on matrix and fossil. In fact to increase contrast I like it on the fossil. Coating just the fossil isn’t an option. @Ptychodus04 @RJB @jpc @Harry Pristis
  25. I found a US source, Talas, for small quantities of Butvar and Paraloid consolidants in 1 and 5 lb quantities. http://www.talasonline.com/Butvar-Resin For a great bottle to use with Butvar and probably other consolidants see my post:
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