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Showing results for tags 'coating'.
Found 10 results
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How to peel off ammolite coating of old collection
yuyu fossile posted a topic in Fossil Preparation
I bought ammolite on a internet auction. Former owner attached the documents about the fossile, that says it's bought in 1995. But the fossil coating is too old, and peeled off in some places. So I tried to peel all coating off and make new coating. I thought coating would be made from paraloid b72, but it cannot be dissolved by toluene and it is difficult to peel off all. Do you know any good idea to peel off old coating?
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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.
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I have recently received this Palaeoniscus freieslebenensis from @Strepsodus, and it has some kind of coating around the fish, the matrix is slate and I would prefer to have it without this coating but I don't know if I can remove it, and even if can should I do so or would that risk the integrity of the fossil?
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I am quite new to preparing and preserving fossils and am not very knowledgeable on resin coatings. I have been told that Poly Methyl Methacrylate has some similar properties to Paraloid and can be dissolved and used to coat fossils. Is there a reason it is not used for this purpose? Thank you very much for the info.
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I only prep with hand tools at the moment so I can rarely get all the matrix off a fossil. However, when wet, the matrix is usually impossible to see and the fossil looks very well prepped. Is there a coating I can use to keep the fossil looking wet? I’m looking to try this on trilobites in particular.
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I've heard that shellac is not commonly used to coat fossils and bones anymore because it doesn't hold up well over time. Does anyone know how long it typically takes for shellac to start darkening and cracking? Do you have an alternative you prefer? Thanks!
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I got these ammonites a few months ago and I was wondering if I should put any kind of protective coating on them. I have them in storage now. When I display them they will not be near any direct sunlight but I was still worried the color may fade plus the shell is very delicate. I’d prefer to leave them natural but if there is a chance they will fade then I’d prefer to put some kind of protective coating on them. Will they fade over time even if they are not in sunlight? should I coat them or leave them as is? If I so what is the best product to use and how should I apply it? Thanks
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I was wondering if there was a common term used for the fossils that remind me of a glob of construction adhesive. Sometimes binding fragments together sometimes just an unrecognized mass sandwiched between pieces of limestone.
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I obtained a rather attractive triobite today (my first one) but knowing that these fossils are often tampered with to some degree or another, I decided to put a little acetone on it to see if I could expose any restoration or remove any coatings that may have been applied (I want it for macro photography purposes, and coatings would ruin that). I covered it in acetone, left it for a few minutes, then rinsed it off. Now, instead of being jet black like it was originally, it looks silvery grey - like this: Of all the things I expected, it turning grey wasn't one of them. I thought black or brown were the natural colours. I don't really think the whole trilobite can be a fake, because for one thing it's too flawed, and for another the eyes have the tiny, tiny lenses. Have I just impacted upon a coating without removing it, or what? Any suggestions welcome!
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I found this pretty 2.5 Inch Kogiopsis tooth recently. The find basically looked like this in the sieve and when I took photos after arriving home. Already, I am thinking that this will display great next to other teeth of this type. When I went back to measure it, the tooth looked like this. Hmmm. I liked the 1st version better. I know I can add baby oil and make it pretty again, but I am looking for knowledge on 1) what is the covering material? Comparing the bottom teeth in the photos means there is LOTS of detail under a very thin covering. 2) Has anyone successfully removed the covering ? If so, what techniques did you use. I am still deciding and looking for any experienced based knowledge. Thanks for all comments, assistance, knowledge provided. Jack
