OCC Ceramics: Making a Plaster Mold
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- Опубліковано 25 лис 2013
- In this demo OCC instructor Alan Paulson is showing how to make a plaster mold for mass producing ceramic pieces. The demo shows a mold being made for a 6"x6" tile, but this technique has limitless uses.
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From one educator to a next: Instructions, demonstrations and explaining the process are excellent.
Dier'e Designs
nope : the teacher was distracted and forgot the 'DEMOULDING' soap to extract it from the "mother" and ruined everything .
Very useful for easy instruction. Thanks!
Tks for the post!
Great video most important thing i like about this and learned from it. Is layer you buckets with plastic so you don't have to clean them out quickly/right after alot less mess/saves the buckets. Also i like the metal brackets if they are as good as using wood working clamps that would save the need for them and make the resizing of the mold boxes much quicker in setup time.
it`s just waste of plastic, bad for the planet. If you just wash at least you are polluting only one way...
never seen such way to making moulds for ceramics!!
Wonderful video. Thank you so very much
Thanks, this video showed some mold making techniques that will help me make soap molds! :-) Also, I think it's funny that "Bittersweet Symphony" was playing in the background: "But I'm here in my mold / I can't change my mold" LOL!
Cheyenne Canfield hoo
Cheyenne Canfield selam
Very nice tutorial on a one part plaster mold! There is one thing I realized towards the end that could be added!
Adding a release agent (like murphy soap) before pouring the plaster would make the terracotta piece dislodge almost completely after hardening! Then, you wouldn't have to risk chipping or cutting into the plaster while digging out the clay piece! ^^
You're basically explaining to the "teacher" how it's done properly 😄
This is not a good tutorial.
Can I smear Petroleum Jelly (Vaseline) for a release agent on the forms?
Nice Plaster Mold.Thank you so much for this. Sifoutv Pottery.
Wow nice tutorial ! ...but at the end, I see the brown stuff, is that clay ? ...or is it fully cleaned ? and the brown thing is something else (?) ??? Thank you for your time !
I get the idea . Thanks for posting.
Beautiful. Need to learn how to color a plaster of Paris casting with watercolors. Any recommendations? Thanks
That's Very good thanks a lots
Interesting video btw
Nice video
Awesome sir
I also like his mixer
I've been a mould maker for over 35 years it is very frustrating watching a person teach mould making when he doesn't even know how to mix plaster.
+bruce kerr yea, that was a bit of a mess...
+Ediel Dominguez a simple tip you are pouring the plaster to early. Wait till when you pass your finger through the plaster and it starts to leave a trench in the plaster this is when you pour the plaster. This will stop nearly all the leakage problems. It's a shame you live in another country I could teach yo so much. A lot of mould making secrets are kept within the trade. I live in Australia and learnt a lot about mould making from a mould maker that worked in potteries in Sydney before ww2.
... he was playing smart with students'natural ignorance. Nor he used the soap to demould and separate both pieces : the mould from the clay. Maybe he forgot ; maybe he was fooling students around ...
I have an old plate and wish to make a mold do i cover the plate in petroleum Jelly to be able to remove? making a press slump mold thanks.
bruذce kذششr ذش
if you take a dried tile and brush a layer of wood polish before pouring the plaster it will not stick with the tile and come out very easily without damaging the mould and you will also save your master piece.
we are doing this for almost 15 years.
and the next tile u put in? do u use wood polishe on the plaster so the next will come out smoothly?
Those look great to use with sausage gravy for biscuits and gravy
Than you sir.
Don't dump the plaster in sprinkle it in slowly there be less bubbles
If you get a bottle of Windex, and Duff half of it out, adding purified water to the top of the bottle. Shake it well and then just give it a light Spritz over your mold, this will prevent bubbles. But thank you for this video I am saving it for future moles that I will make.
How could I take the plastiline off from the mold? I think it must be spread with some oil to take it off easier.
I wished there was an undo what I just watched option, Poor souls have probably paid to have this man teach them all wrong... A new generation of the studio potter is on its way...
Bittersweet symphony playing in the background 😂🔥
You're right I can hear it
I want to make a miniature useing ceramic meteriL... Can you help me
Thanks
Hi. I need help with a question. I live in mexico and cant seem to find gypsium.powder to make molds. I would like to make slip molds, i understand that plaster is ideal with a gypsium mold being that the gypsium retains the water from the plaster hence creating the slip effect. Unfortunatly down here i cant find gypsium, my question, can i use stone lime powder to make the outer mold? I do have acces to plaster. Or could i make the outer mold from.plaster and the slip cast from.plaster also? I would appreciate a response ty.
erick sal you can use plaster as a mold too, then put oil or petroleum jelly so the pour would slip right off
What clay did he used?
That's about the lumpiest blob of plaster mix I've ever seen. Don't do that folks, mix the plaster well and thoroughly, especially if you are going to carve the plaster. If you don't you are risking that the plaster is not cooked correctly in some areas and once you start carving you may experience chunks of plaster breaking off and ruining your work.
I use a plastic bucket and a hand mixer bit that attaches to my hand drill. You can get one of those at any paint store or hardware store. If you use low quality plastic buckets and you are using them continuously for mixing plaster you will only get a limited amount of use from them as the heating of plaster will deteriorate the plastic bucket. Invest in a good quality bucket and you can get many uses on them.
The instructor here is correct when he states to not dump the liquid plaster in any drain, as in time the plaster will clog your drainage pipes and you are going to pay quite a bit to get those replaced. Just let the leftover plaster dry on its own inside your bucket and toss the dry pieces into your trash bin.
Good info
... it is not ...
thank you so much this was clear and easy to follow. how do you figure amount of water at the start to get the right amount of plaster to fill your mold?
+Brigitta Dixon My teacher used this "mountain" method which I never understood. The consistency you are going for is like pudding or pancake batter. I have been told that when you can draw a line on the top and it does not immediately fill, it's ready to pour. But you need to work quickly, as once its in the water and you start mixing, it will start hardening. Not IMMEDIATELY but fast enough where you wont want to dawdle.
1 liter of water + 1,900 kg of plaster .
move it at medium - speed with a drill for 2 minutes . You've got only 4 minutes to pour it VERY SLOWLY onto the mould to avoid air- bulbs .
Forget not the soft soap to separate and demould it out of the mater .3 times
@@manuelluis5456 Are you saying the ratio is 1:9?
@@really2345 ... /... , 1 litter / [1 kilogram ] water _ to 1 kilogram and 900 grams , of plaster of Paris .
Mix with a drill for less than 2 minutes . Only have 4 or five minutes to pour it very slowly onto the 'mater" .
Forget not the demoulding soft soap all around the "mater's . ( 3 times ) before pour the liquid plaster onto it .
hi, what kind plaster was he using.
Is the plaster is the same of gypsum?
你好，认识你很高兴，你的工作室在哪里？
Hi Russ, is there a class I could take from you to learn how to make a two piece plaster mold so it could be used to pour a clay slip into for creating a ceramic piece?
+Sue Smith Sue. I was just a student in the class. Note, I am nt he guy instructing...I'm the guy holding the camera. I am still learning a good deal on mold making myself, so Idon't know if I would be the one to give a class just yet. However there are many good videos here on UA-cam that show how to make two part molds.
Neat!
What kind of clay is it ?
can anyone give me some recipe for making this kind of things. it would be so helpful. thank you.
How would plaster if Paris fair against molten aluminium, I want to make a reusable cast so green sand won't work
I'm a Kitten and I pissed on you
try use W.D. 40 . ( if l understood your question )
Is it alpha hemihydrate or beta?
Wasn't there a big lump that poured in?? :/
What happened to masking up?
Could a plaster mold be used for a poly resin casting?
sure. be sure to use a release agent and make sure you eliminate any undercuts before using the mold (edges that you would have to get your cast piece out from under)
***** when I use it, I didn't use one and it worked fine. But a light spray of vegetable oil would work as well. I never used vase line but I don't think it would be a problem, unless using a petroleum based clay like possibly some of the home baked poly clays. Even then I don't know if it would be bad.
Can anyone write to me the ceramic ingredients because I don't understand the language?
where can you buy plaster and clay locally?(in general)
clay can be had from art supply shops, and also many school supply shops. I buy plaster from the hardware store.
Russ Herschler
Garden Troll
Garden Troll if u looking for a bunch Georgia Pacific
Garden Troll
is it is plaster of paris
Hi Russ, isn't is necessary to brush the clay with some oil in order the plaster don't glue in it ? I considere making a plaster mold of an aluminum piece, does the plaster attack aluminum/ Thanks for posting,oscar
Nope. You are not going to let the clay dry. Frankly, you will be destroying your original. Once the plaster is hard, just pull the clay out, clean up the mold, and you are good to go. Frankly I would wait a couple days until the plaster is rock-hard before using it. Some DO use vegetable oil spray if it's needed when running production pieces with the mold though.
I have no idea how the plaster would react to aluminum. Never tried it. Hot water WILL eventually break down the plaster of you get some pieces of plaster caked on it. What will you be making your pieces with once you have a mold? Depending on what, you may consider using silicon or some other material.
So, you don't have to put the piece in the kiln before making the mold?
No need to kiln the piece.
The wet clay is used for the mould because it's easier to remove once the plaster has set.
It is then the plaster you make the copies from and you reuse the clay for your next project.
Hope that helps
4:27 Eeeeww! What is happening behind the camera there Russ? Little too excited?
Estou interessado em contatar com fabricantes de maquinas para fazer vasos em turfa
why not list the actual types of plaster and other ingredients?
It's plaster of Paris and water
Good
do you use cement as in what people use for basements?
it's plaster of Paris mixed at roughly two parts plaster to one part cold water
Hi can you put the list of materials to make this or any other. From Mexico thank you
Question is plaster as stout as plastic ? Will I wit-stain weather ?
+Joe Brown It's pretty durable. It takes a week to harden completely, but it will be pretty hard. Note. All molds, plastic as well as plaster will wear out eventually.
I want to cast some stuff made out of plaster to make a mold for ceramics. What kind of release agent do I need to use on the plaster so it wont stick to the plaster I am pouring to make the mold?
proflooney You can try baby oil. It's a good release for plaster, but I've never tried it ON plaster .. the other thing that works really well is cooking spray.
proflooney hi, when I did my degree course, we were taught to use soft soap, just a really soapy water mix. What you do is take your model and soak it in water until no bubbles are coming out, it needs to be totally saturated. Depending in the size, this can take from an hour to about 3 hours for something about the size of a middle sized watermelon. Then you take it out of the water, mop up the excess and start soft soaping, you need to do at least 3 coats (you will be surprised at just how absorbent the plaster still is when you do this process!). This will prevent the new plaster from sticking to the model. The soap will not transfer to the mold. Good luck, and watch those undercuts!
Silk thanks silk I got a bottle of tincture of green soap in i will try this out very clear instructions from you i know it says something abt being saturated but wasnt sure what they meant you cleared that up really good. gonna have some fun next week seeing if i can do one. not sure if i spotted any undercuts but if there is any they should be really minute and the shrinkage of the plaster should take care of that
proflooney it's actually been 7 years since I did and mold making and I remembered this morning that I forgot a couple of steps. When soft soaping, you actually paint it on neat, then sponge it off with water, then paint it on again. The model will take on a nice warm waxy/satiny sheen when this is done properly. It was the last step in my favourite part of the process. I loved making the models, hated making the molds!
Silk ok thanks yes I have some rubber molds for stones and rocks from the model train industry. I want to cast them in plaster let them cure good then make molds for slip from them so i can make ceramic stone and rock walls for the inside of my aquarium for a jungle ruins theme I am doing. the fired ceramics will last nicely and will be fish safe
.👍👍
Russ. this is not my subject but still I can say if you put a layer of grease to make it easy to remove.
Imam Balouch م
That seems like an obvious way of doing it, but it will lead to disaster. Don't do this!
Grease/petroleum jelly will clog the pores in the plaster, sealing it and making it useless for slip casting. The plaster needs to be able to absorb moisture from the clay slip in order for this process to work.
@4:12...MGMT?
fivou joias
What if I want to make plaster tiles by using a plaster mold? Is there any way so that the two won't stick together?
+山内淳カイル I do not know for sure. I would need to experiment with it.
+山内淳カイル Yes, you need to use petroleum jelly on the mold before pouring your plaster. It acts as a barrier between the old plaster and new.
soap too
... the teacher has forgotten a VERY IMPORTANT part of it : which is the liquid-soap we put on top of the design to separate the clay from the plaster- mould .... and he just played smart ...
loved watching just a pity there is so much background noise. thank you for sharing
Nice
Nicevideo
supper.......
👍👍👍👍👍👍👍👍👍
please whats the name of the song we 'r listning in this video ps :ilove what you did nice job
Bitter Sweet Symphony- The Verve.
wow
whats the jet engine noise?
What did you made ???
terrecotte violato (vr) italia
What plaster is used here please
Plaster of Paris
ОТЛИЧНО!!!!
is there a special plaster to use it?
Adriana Stolfi
plaster of Paris .
Manuel Luis 🏰🏰🏰🏰🏰🏰🏰🏯🏯🏰🏯🏰🏭
ممكن تترجم الفيديو
Is the powder avaliable in pharmacy without a prescription?
Thobe Mbatha If you mean the plaster, then yes. I don't know if they carry it at the pharmacy, but any craft store and some hardware stores would have it.
Thanks
pharmacy ??? you mean DRUGSTORE , Perhaps .
Manuel Luis Same thing. In Mexico, pharmacia. In the USA, Drug store and Pharmacy are one and the same.
se puede traducir al español
😊
the end ??????????????????????
how can we make a wooden mold form?
+Linda Gordon These ones are made with 1" x 6" boards. On the end of each one you screw an "L-bracket" so it can hook onto the next sine. It noes not need to hook over perfectly, but you want it without TO much wiggle room. Each side hooks onto the next at a 90 degree angle. This lets you use longer board and you can slide and size the mold form to your piece. As for keeping the clay from leaking out, when you are going to pour your plaster, you use clay on the corners and where the board touch the table and form corners to keep plaster from leaking.
+Russ Herschler Thank you hon!
I want to make a plastic mold
ممنون از اینکه این کلیپهای مفید را در u t yu نشان میدهید
Boa tarde
Para fazer a barbotina de louça eu coloco quanto % de sódio portat no feldspato?
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Mim ajudar na resposta dessas 3 perguntas por favor.
Meu zap 081-9-9143-0380
Question? Why did he not say anything about using mold release? scraping clay out with tools is an easy way to ruin your piece, as well as telling the students to soak your plaster in water to release the clay?
I don't know what I just watched. When he pulled the soft clay out, what was left did not look like the object it was supposed to be molding. 10.41 of my life wasted.
bug wilson it’s supposed to be a negative mold. Like a template. Put oil or petroleum jelly and then pour resin or plaster then you’ll get the same object that he molded
Although the demonstration is excellent, there is no mention of Extraction ventilation or wearing a mask - plaster can be inhaled into the lungs very easily and can be very dangerous.
Jan Cavanagh plaster is not dangerous it comes from the ground and is non toxic
James Sipes - loll! Keep telling yourself that bud. inhaling all mineral dust is dangerous. Go look up why they don't have actual silica sand for sandblasting
what is red clay called ?
... mother mould ( ? )
it's a cone 6 earthenware
generally, Terra cotta
Amaco Sedona Red Clay no.67 low fire looks very similar. Clay body that I am currently using.
Aaron Hoffman
How to paint acement flowers vase
How
How to prime acement vase for painting
Goog
so poor
Well i guess if i wanted to make that exact mold 20x for a project, not gonna happen...
doing all wrong
العلم لون وقطعت قماش من استعد له فقد اشرك بالله تعالي
Wow he going to have an issue when he pulls it apart he should have used Vaseline or my dad had his one special mixture
Like like like ....
Samouk czy po szkole robi tę foremkę
todo en inglés no se entiende nada
Panasonic masen ok
It s just for point youtube. Is not cleary..
نبيل
ترجمو عربي لو سمحتو