Sand Casting With Plaster Of Paris
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- Опубліковано 6 сер 2024
- Sand casting is one of the oldest ways to reproduce an object by making an impression of it in sand then pouring in a liquid that becomes solid after cooling or a chemical reaction. Plaster Of Paris is a powder made from Gypsum that can be mixed with water and poured into a mold. After a chemical reaction takes place it becomes a solid that can be removed from the mold. This video will show you how to use beach sand to cast objects with Plaster Of Paris and explain the chemistry behind the hardening process.
- Наука та технологія
Thank you for this! I watched it yesterday (after terrible panic attack: I've got a brain injury & was overloaded) and went out today: bought plaster then went to a sandy beach to try it out.
I used the print from my shoe and added fins because the sole looked like fish scales. And I made a rough face shape, stuck stones in for eyes and mouth then for nostrils I stuck round sticks in and did rough thumb marks for hair.
I poured the plater into both moulds, waited a little bit then removed the mouth and one eye stone and the nostrils sticks so thin plaster had holes in. Then I had quick dip in the sea (the Med).
The fish isn't great but I really like the effect especially on the face (very expressive) and want to do more. Brushed excess sand off with a toothbrush when home, the sand has stuck on surface, looks nice: solid sand.
Good therapy for the traumas/abuses I've suffered - thank you for helping me to get out into the sun and play!
+Jenny Hughes You're very welcome. Thanks for watching!
I'd love to see a pic of this!
Thanks I like your attitude. Very open, generous and straightforward
I really liked the bird tracks
definitely looks like a very real statue of the items! thanks alot for vid.
"a little claw that someone donated" LOL
thank you this is just what I've been looking for a fun project for my grandson and I to do on the beach
Wow, neat stuff. Thanks for sharing.
your video actually helped me a lot sir. Thankyou so much for sharing and making this video. much love ❤
Very nice. Thank you! Please show more projects like this
Thanks alot for the info.
I must try this out.
:D I was going to do some casting using a conventional type mold, however, casting in the sand will give my final product the "relic" look i am aiming to achieve! Also...Thank you for taking me along on your environmental adventure/art project...looked like it was an enjoyable way to spend some time in nature and was a bonus i wasn't expecting!!!
Cool video, very informative.
Beautiful. Thanks for sharing 👍
You are wonderful creator!
Great advice, ! Thanks
Great idea. Lots of fun for a small amount of money. You mentioned you can use these casts as decoration in your garden. In that case i would advice to apply some sort of coating in that case. Since rain and wind will erode your work. It will not be affected quick but in a year or so your work will look bad and with these thin casted objects, they can even disapear over time.
Awesome!
Thank you so much.... this Video helped me a lot and it worked perfectly .... the result was great loved it.... ❤️❤️❤️
Awesome!!
very nice.
Very Very NICE> THANKS
really fun thanks
In orthopaedics its used alot.. Great hack !
Never start stirring before getting your plaster into pail and allowing all of the air bubbles to escape.
very interesting. Congr. I Would like how to paint it. Thank you
Strong Men say looks very beautiful !
Once it hardens and sets, is it unaffected by heat? I'm considering using this to make molds for use with vacuum forming...
Are there any toxicity considerations eg residues left in the sand that could pollute the environment? Otherwise what a cool idea =)
Eg I know Gypsum is a natural product.... but once it is turned into Plaster of Paris perhaps there is something I haven't heard about. I'd really love to do a chemistry degree
I was looking for a recipe to add sand or gravel to the plaster mixture to make the plaster harder, like concrete. Google suggests this has never been tried before and sent me here!
(Concrete is just Portland cement with gravel and sand added.)
I also wonder about adding dirt or pigments to the mixture for a more natural color, perhaps even swirls. Or would additions completely ruin its strength?
I think these would make good science experiments, because apparently, nobody knows. There's not a lot of REAL science experiments that people can do these days, -where the outcome is unknown. Let us know what you discover. 🤔
--Doug Bashford
Use 50% water and 50% plaster
When mixing the plaster with the water
prepare two bowls
one with the water and one with plaster
pour the 50 % plaster in the water in one go into the 50% water bowl. Sifting action.
Wait for the plaster to saturate with the water.
Do not wait too long
mix from top of the plaster heap in a circle action until you reach the bottom of the bowl
keep on stirring until the mix reach a thin to medium porridge consistency .
Pour from the side of the mould.
This method - No lumps
is it possible to get a nice sand mold of a persons face
Nice
Can you use play sand from the big box store? If so, do you wet it and pack it down good. My granddaughters want to try this at home.
Yes and yes. :)
I was thinking of trying to use plaster to do lost wax casting, do you know what sort of temperatures plaster of paris will withstand?
300 F
It should work fine for that. Heat will only dry it out a bit.
I was wondering if you could get a good mold of a face by sand casting....... At my job we do a thing called water jetting sand to get a good tight compaction (kinda like the waves do to the beach shores) so assuming you can hold your breath long enough to have water poured into a sand bucket that drains with your face submerged in the sand do you think you would get a decent mold obviously you're going to lose details
I apologize about punctuation
can I have one I really like these
what about investment?
it was always calcium sulfate. just with differing level of hydration
Did you search hackaweektv? I've posted three videos with Parallax goodies so far.
lol, these look like fossil