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Showing results for tags 'acid prep'.
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Upper Muschelkalk Crailsheim material, can I use acid for prepping?
Fossilcollector88 posted a topic in Fossil Preparation
Hello, I have some bonebed material from: Gr. Gröningen Crailsheim, Germany Triassic, Ipper Muschelkalk. its a Nothosaur bone sticking out, but a small part is in another stone (piece broke before I acquired it). I tried to scratch it out, but that will takes ages and doesnt seem to look too good. I heard about acid prepping, would that be a good idea with this? Its similar stuff as: http://www.thefossilforum.com/topic/111818-lets-talk-blezingeria/ if so, how to go at this? Anyone has experience with this? -
Here is a section of Ichthyosaur paddle that I found recently near Whitby. The sea has rounded the pebble nicely but there is still a little bit of matrix to remove. I tried using my air pen to remove the matrix but unfortunately it's like penning metal due to the pyrite. So acid is the only option. The first dip I only protected with paraloid for a quick dip (1Hour) which worked well and gave the bones some definition. On the second dip today, I coated the exposed bones with some candle wax to give them some added protection against the acid. I did a longer dip, and a little more bone has been revealed but not much. I think it might be a long process with this one. For people who are familiar with acid prep, do you remove the wax each cycle? It seems counter productive as it is still protecting the bone and has not been eaten away. More pictures to follow soon.
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Hello! I am brand new to fossils but fell for the Keichousaurus. After combing through old Fossil Forum posts on different prep methods, I’ve been on the hunt for a nicely prepared specimen. I found this one from a friendly, reputable seller and the prep looks great compared to everything else I can find online. However I’m looking for a dorsal specimen ideally, and this one is not exactly cheap. How hard will it be to match this prep quality in a dorsal specimen? Are we talking years of looking for a similarly nice piece or do they pop up fairly regularly?
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I've dipped a fossil piece into diluted acetic acid and removed it after an hour. It's currently sat in water, but's in the short time it' been in there it's developed lots of salt crystals on the surface. How should I remove these? Wait until it dries and use Acetone? Thanks.
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I’m legitimately lost as to what this could be. Devonian, Milwaukee formation. Fish tooth plate?
SilurianSalamander posted a topic in Fossil ID
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I have found this coiled cephlapod in Pennsylvanian age limestone in Missouri. I believe it to either be a temnocheilus or cooperoceras. I was wondering if there is anyway to tell if this fossil was silica. And if it was could it be prepped by using acetic acid. TIA!
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Our Favourite...Keichosaur!
FossilDudeCO posted a topic in Is It Real? How to Recognize Fossil Fabrications
Alright I know, I should know better. But the price was right and I was having a good week so I needed something to shatter my hopes and dreams. That out of the way. Listed as a "US acid - prepped specimen" Self explanatory. Back Right foot Tippy Tip of the tail Right ribs My biggest question is the specks of material between the ribs. Is this common on real Keichosaurs? To me on the overall picture they appear to be the ends of the ribs broken off from the underside. I will also note that almost every bone on this little guy is 3D above the rock surface. I was having trouble getting a good side view with my camera, I will try again, but figured you could all start with these! Thanks much as always, -Blake
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