Thanks for this detailed video. I learned this process in college, but we used Vaseline instead of clay slip and also applied thin layer of Vaseline to the inside of mold and it released much easier than this. Even if there are other ways of plaster casting, it's still a valid way... Cheap too!

Obviously Silicone, Polyurethanes and resins can be used for different reasons, but this is a traditional method and a good skill to master. One thing I would suggest for those who wish to try it, is to use a beta or softer plaster for the waste mould and an alpha (harder) plaster for the cast. Some alpha plasters can have a different tint to them and help differentiate between mould and cast. Also be careful adding each layer to the mould. If the second or third coat is too thick it can heat up and cause the thinner layer beneath it to crack.

1. make sure the clay is not to dry so you can take the plaster off the positive, 2 Make sure the clay is a bit humid on the surface,not to much , so the plaster doesnt create bubbles on the surface, 3, Put pigment on the first laier of plaster so you know later when you are opening the cast you are close to the positive. 4 Sprinkle the first two laiers of plaster with your fingers and hand without touching the surface of the clay, using the brush can ruin the many details of the modelation. When mixing the plaster keep your hand in the bucket taking your hand out and in might add more oxigen to the mix creating bubbles. Before casting the positive sprinkle with a bit of water the negative so it releases the surface tension and it doesnt create bubbles.

Thank you for being direct and getting straight to the point

Fantastic quick tutorial, I learned this at art school years ago, but I forgot some details this was very useful, thank you.

Really good video. I teach sculpture and we use a similar process. Comments are correct about other molds like silicon or latex being better and reusable but that process is exponentially longer because of drying time and the number of coats for a successful mold. In a classroom situation, or if you don't need copies this is the most efficient way to go. The one detail I might add is to add a little color or dye to the mold to help differentiate from the plaster used for casting. Thanks!

From a professional mold maker point of view, this is a very interesting way of doing things

Thank you so much for this video as an university art student none of the staff teach technical skills anymore !!

This is the video I have been searching for, thank you

Greate video! I'm a non-practicing former sculpture student. But now I had to take dirty-mold of my teenage daughter's sculpture project. I liked your mold opening practice with butter-knives! During the process I also came up with using a wooden clothespin to open it. When you open the wooden clothespin then you have a nice diagonal tapping to separate the mold.

Thank you very much for this thorough explanation. Now i finally know how to cast my sculpture.

I learned it in art class in junior school years ago. We painted the inside of the mold, and the result was way less of a mess.

Thanks, Michael ! this is such a concise and informative tutorial. Traditional materials and some practice provide for very satistfying results. I have discovered your work and like the contemporary rendering of your themes. Greetings from Zurich

This was wonderful, thank you!

would it be a good idea to add some food colouring to liquid plaster when filling the cast then when taking the mold of you could see better

Beautiful. Any videos on plaster bad relief casting and especially painting it with watercolors? Thanks

I would add some powdered pigment to the outside plaster so you can see what should and shouldnt be there

Very good video, shows in short the whole process. tank you

Such a brilliant video. Thanks a lot

感恩您，以雕刻示範和啟發混凝土的「模板系統」和「分模線」。

truly brilliant

this is incredible. how do you manage to remove the mold without destroying the plaster inside

What if I wanted to duplicate the statue? How do I make a mold that doesnt get destroyed after one use?

Outstanding video! Thank you so much for doing this.

That was a very detailed and well explained video. I have a question though, would it be possible to make a mold of a fired piece? I was wondering if that could be a way to not have to destroy the original sculpture. Of course, after drying and firing the size would be smaller, but if you don't mind or you were to do the original piece slightly larger to make up for the volume loss... could that be an option? Thank you!

Hello....excellent. Can I use glycerine or any kind of oil rather than oil soap?

Thanks, it was a very good lesson.

Bluv, good job at explaining i had something i was working on and stuck for a week thank you 😊

With a little patience you can also directly model like this style with plaster alone. Build up base shape with armature and hemp, if using iron based support, it MUST be totally sealed from moisture!! The final layers of plaster will stick onto plaster base, and can be worked with spatula when thick enough, then scraped back easily as it is still soft. End result is very much like the effect or style of sculpture shown here, using the textures of medium as part of design.

Thank you, great video!

This video is gold, huge thank you, also i look like your twin

Would this type of mold hold up for making copies of silicone masks? Trying to determine if I should use epoxy resin with fiberglass powder or find a less toxic alternative like this

amazing. thanks so much

We use this method, however we add untangled rope strings in the mold making for strength, we never brake the mold when releasing it as so we can reuse it many times. Also found out that any liquid apple soap worked best for the quick hardening plaster we used.

Great video! Wanted to know..does the final plaster stay solid over time. Does it fall apart and if so, how do you prevent that so that it can withstand time?

I didn’t realize casting was a one off endeavor. Thanks for the explication

very intresting. thank you to share you'r experience.

Your an amazing artist!! Very good job!!! :)

But if you made your mold thicker and used giant elastic mold bands instead of plaster as glue, you could remove your molds without destroying them and make multiples of your sculpture... 😥

Hi I’m trying to learn how to do these.. fascinating. What did y seal the molds with? Drywall?

In school we did the same thing, but poured cement into the plaster waste mold, and the mold was one part, not two. A little easier when students' classtime is short

I was thinking of casting with casting clay instead of plaster and then reworking the clay cast before firing, in order to get much more detail and a much smoother finish. Do you have any experience with that, especially portraits?

🤗Thank you so much for this video 💓

I would also suggest watching some monster makers mold and cast👍

thank you so much

Thanks for this video !!!!!

Fantastic.

Muito brabo, vlw pelas dicas

Did u used any separator between Stamps

What a headache and soul crushing

Beautiful

This is an old traditional sculpture technique. You lose the original clay you modelled very carefully. It is a learning process. Keep learning, finally you will have a lot of skill and confidence.

thank you, thank you so much

is it necessary to destroy the mold in the end? if you cast the mold with other material and then gently pull out the sculpture can't you reuse the mold multiple times?

This is a great video. Thank you!

Hi! Thanks for the video, I see also in the comments a lot of helpful ideas! If someone could help me, I need a bit of advice. I am a painter but recently started to work in clay, I love it and have some projects in mind. Did some bas-relief. My question is: If the clay is dry and I do not have an oven can I make a plaster negative of the work? Or do I need to have the clay wet? What should I use to separate the two of them ...oil soap? Is oil soap just soap made from animal fat? Thank you!

Is that an oil clay or a plasticine used for the original sculpt?

Thank You!!!

Very helpful video. When making the mold do you let the 1st layer of plaster set hard before adding the second layer, or do you just let it set slightly before the next layer. Thanks.

Then there is silicone. There is much to be said for tradition. But this process must be pretty stressful with much room for disaster.

Do you soak the mold in water in between each application of Murphy oil Soap?

You could also have made a piece mold, made of 3 or 4 sections where there are undercuts. Same process as you show , but much easier to remove rather than chipping it away.

Fantastic

Good video, I cast with rubber in plaster sometimes.

Really interesting, and reminiscent of stuff done at college, but can't see why you need this to be a waste mold. Apologies for being dim, but why not just stick at the clay sculpture?

I have a very complay form. Will this technique still work?

who made the video?

Thank you

I never though all this work process involved making a sculpture!

so with this technique you only have to be able to remove the sculpture properly, the cast doesnt have to be removable without breaking?

Does anyone know if it’s possible to mirror one half of a sculp or what ever is intended for casting and mirror that half to make a symmetrical piece ? Any help on that much appreciated

does the clay sculpture have to be wet to indent the shims?

Is that a special plaster or just a normal construction plaster ? ...how you make it so liquid ? When I mix plaster with water I get chunks of plaster that are not well hydrated and ruins my composition + it gets very fast thick, I see you managed to make 2 buckets of that and have the perfect consistency ...what is the secret ???

Awesome fnd? This one my art's channel?

Can I do this but fill it with silicone to make a mask?

Does anyone know of a good video on how to find the parting lines and undercuts so you know WHERE TO PUT THE SHIMS? I'm sculpting a life size dog standing four square and have never cast before. THANKS!

Make a reinforced silicone mold and use it over and over again.

A very useful invention It is possible to invent an article placed on a quick dry cloth screen To be placed on the face and dries quickly with the same facial wrinkles In order to work on it the face handles and professionally make a perch statue I hope it will be a useful idea

I sculpt very well with paper mache i also paint ,but I want to be your student in this field. What does it take for you to mentor me despite the distance.

what material to use fo a reuseable mold?

Herculite is a great alternative to standard plaster..it sets rock hard

Can u use plaster wraps instead

Is that Plaster of Paris mix?

Thank you!!!

Is there a barrier applied to the clay prior to painting with plaster? My clay (WED clay) is extremely hard to remove from the plaster mold. Yours almost fell out.

Could this work with spray foam

Anyone know if you can rinse the finished piece in water afterwards? Does this hurt the plaster....?

I wanna drink that plaster. It looks so creamy 😂

Güzeeeel

Great video. I subscribed. Im an artist as well.

great sir your technique is very nice plz can you tell me the substitute of Murphy soap oil for cleaning both moulds

Why do you destroy the outer mold ??? .......is there no way to save it and make more heads ???

What you pouring inside

im a fibrous plasterer and you can only use this once and then have to dispose it better using silicone rubber

Can someone tell me why he soaks the mold in water?

Is not there something call mold release ???

looks really hard to identify the mold from cast. ;(

merci

I want to make a statue that is about 12" tall. What is the best kind of plaster to use to make the statue very hard so if knocked over it will not break? Is there such a thing as resin plaster? If so would that be the best? Thank you.

thank youu