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Showing results for tags 'consolidant'.
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I'm about to stabilize some invertebrate shells from Tennesse. I decided on using paraloid B-72. What ratio can I used to hold the fragile shells together, without causing any major visual alterations?
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Hello, I recently got this section of fossilized squid pen of the giant squid Tusoteuthis longa, from the Cretaceous Niobrara Chalk of Kansas, USA. It measures about 7cm long. After receiving it I realized that it seemed rather unstable, with small "splinters" flaking off like a fragile piece of wood. I hear it is recommended to consolidate vertebrate bones with something like Butvar B-76, but what about something like this squid pen? I don't know what the material even is. Does anyone have experience preserving these? Thanks.
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What's covering my plesiosaur vertebra? How to clean
pachy-pleuro-whatnot-odon posted a topic in Fossil Preparation
Hi all, I recently decided to buy the below plesiosaur vertebra after having seen it for a long, long time. It dates to the Callovian of the Oxford Clay and was found at Peterborough. I suspect it may be attributed to Muraenosaurus leedsi, as it comes from a cryptoclidid plesiosaur, but is both larger and more elongate that the typical Oxford Clay Cryptoclidus vertebrae I'm familiar with. Supposedly coming from an old collection, it has a blackened exterior that doesn't cover the entire piece, with the more common buff colour visible underneath. As such, I expecte -
Which is the proper method of calculating the ratio of consolidant solution? Should you use a volume ratio or mass? My question comes from trying to label my solutions. Both my paraloid and my butvar were mixed in acetone to the same level of "tacky-ness" with 2 tablespoons of media per 1 cup of acetone. If I treat them as volume measurements I get a consolidant percentage of 12% for both. If I use grams of consolidant to grams of acetone I get 3.6% for butvar and 8% for the paraloid.
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How to actually use Paraloid B-72 and the like, for a total newbie
daveola posted a topic in Fossil Preparation
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 -
Hi Everyone, I recently decided to start preserving all of my pleistocene fossils and feel that Butvar-76 would be the best option. My problem is I can't find it anywhere. I contacted the Florida Paleontological Society and they said they don't carry it anymore. They recommended I either use Duco Cement in acetone or to look on the Museum Service Corporation website. On the Museum Service Corporation website it says that Butvar-76 has been discontinued, but they have an equivalent called B08SY Resin. Here's what they have listed: Butvar Res
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My guide for the best fossil consolidant and adhesive resources. Please let me know if you find any better ones to add to the list. "Understanding and Use of Adhesives" by Amy Davidson, (AMNH), series of videos by Association for Materials & Methods in Paleontology LINK Davidson, A. and S. Alderson. 2009. An introduction to solution and reaction adhesives for fossil preparation. In: Methods In Fossil Preparation: Proceedings of the First Annual Fossil Preparation and Collections Symposium, pp 53-62. Brown, M.A., Kane, J.F., and Parker, W.G. Eds. LI
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Readily available consolidant? Caught short without my PVA.
Doctor Mud posted a topic in Fossil Preparation
Hi folks. I left my PVA beads at home. This is what I normally use as a consolidant. PVA beads in acetone. Anyone think of a readily available substitute? Something that could be available at the hardware store and is reversible with acetone or another solvent. Cane across a shop selling plastic beads as stuffers for toys etc. I wonder if polystyrene would work as it dissolves in acetone, might not be as hard as PVA.... Any ideas? -
How to prepare Paraloid b-72 for use as an adhesive and consolidant
McHorse posted a topic in Fossil Preparation
Heres how I prepare Paraloid b-72 for use as an adhesive and consolidant. Generally I use the approximate mixing ratios shown below which have been taken from a paper written by Amy Davidson and Gregory W. Brown called Paraloid b-72: Practical tips for the vertebrate fossil preparator, which can be found here: https://www.academia.edu/1237393/Paraloid_B-72_Practical_Tips_for_the_Vertebrate_Fossil_Preparator Approximate mixing ratios: Paraloid ratios.tiff However, if you want to create a solution of a known weight by volume percentage such as 20% (w/v) theres a trick. Since weight by volume -
For many years I have used Vinac diluted in acetone as a consolidant and as an adheasive for non structural repairs of trilobites (ie when the exoskeleton flakes off as you are prepping). I currently have about 1/4 ounce of clear Vinac beads left. I already have both Butvar B76 and Paraloid B44 but do not think they work as well as the Vinac. Mind you it could all be in my head as I am generally quite resistant to change. I have used a thick application of Butvar as a reversable adheasive with good results. Does anyone have any Vinac that they would be prepared to sell or trade with me. Not l
