Molding & Casting A 500 MILLION YEAR OLD FOSSIL | Full Series

Molding and casting an ammonite fossil which is around 500 million years old. There are actually two annomite fossils embedded in the original rock formation – one small ammonite and a larger one. In this series of videos we make a latex mold of the original fossil, build a fibreglass mother mold and cast a replica of the fossil using concrete and plaster of Paris.

Part One 00:00 – Making The Latex Mold. Making a latex mold from a 500 million year old ammonite fossil. In this video a mold is made using layers of latex. The fossil mold in this video also needs a seam incorporated into the mold for ease of demolding casts for when the mold is completed.

Part Two 11:16 – Building The Fibreglass Mother Mold. NB: Best to put wax on first followed by PVA application when applying the release agent process.

Following on from the video on latex molding an ammonite fossil, we make a seven piece mother mold to house the latex mold. This video is a short and brief video showing the process and more in depth videos about molding can be found on the channel.

There are many ways to make molds and this video is showing how we make molds here at present, which is our preferred way – it works for us and what works for one person may not work for another.

The model in this video is a 500 million year old ammonite fossil which came out of the mold in one piece. The mold which has been made from the ammonite fossil is now ready to create replica fossils with concrete or any other appropriate material which is compatible with the latex mold.

Part Three 14:55 – Casting The Fossil. The final part in the series of molding & casting an ammonite fossil. In this video, we finally get around to casting the fossil in concrete and we also make a cast with plaster of Paris.

The video footage is taken from two existing videos on the channel which feature concrete and plaster of Paris casting. There are also two other parts to go with this fossil casting video which are making the latex mold and making the mother mold with fibreglass.

If you enjoyed this video, please like and share. 🙂

Casting An Ammonite Fossil In Concrete

The final part in the series of molding & casting an ammonite fossil. In this video, we finally get around to casting the fossil in concrete and we also make a cast with plaster of Paris.

The video footage is taken from two existing videos on the channel which feature concrete and plaster of Paris casting. There are also two other parts to go with this fossil casting video which are making the latex mold and making the mother mold with fibreglass.

If you enjoyed this video, please like and share. 🙂

Ammonite Fossil Fibreglass Mother Mold

Following on from the video on latex molding an ammonite fossil, we make a seven piece mother mold to house the latex mold. This video is a short and brief video showing the process and more in depth videos about molding can be found on the channel.

There are many ways to make molds and this video is showing how we make molds here at present, which is our preferred way – it works for us and what works for one person may not work for another.

The model in this video is a 500 million year old ammonite fossil which came out of the mold in one piece. The mold which has been made from the ammonite fossil is now ready to create replica fossils with concrete or any other appropriate material which is compatible with the latex mold.

If you enjoyed this video, please like and share. 🙂

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Latex Mold A Fossil For Reproduction Replica

Making a latex mold from a 500 million year old ammonite fossil. In this video a mold is made using layers of latex. The fossil mold in this video also needs a seam incorporated into the mold for ease of demolding casts for when the mold is completed.

Following on from this video, separate videos on how to make a fibreglass mother mold and casting will be shown.


If you enjoyed this video, please like and share. 🙂


Any comments, please post below. 🙂


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For molding and casting enthusiasts, please visit: www.diymolds.com


Music by Angel Rust


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Make A Gargoyle | Sculpting | Molding | Casting | Painting Effects | Full Series: https://youtu.be/e3qu–QknLI
Make A Hand Lifecast With Alginate & Plaster Of Paris: https://youtu.be/g5HmOXGA82E
Make A Concrete Leaf: https://youtu.be/xmlXV_dqFUI


Products & materials used in this video:
Sony CX240E Full HD Camcorder – Black: http://amzn.to/2t539ls
Nikon D5300 Digital SLR Camera – Black (24.2 MP, AF-P 18-55VR Lens Kit) 3-Inch LCD Screen: http://amzn.to/2t54ngv
Polycraft Liquid Latex for Mould / Mold Making – 5 Litre: http://amzn.to/2vpINHt