School of Art Demonstration: Slip Casting Functional Forms

[@jaimefernandomartinez134]

Thanks for your teaching, but I'm more interested in how to prepare a good slip for my slip casting process. I don´t know why there are not videos to teach that to the artisans. The final product is a result regarding each earlier steps throughout the process. I don't want to learn about WHAT or HOW but WHY. If you explain WHY, I won't have problems with WHAT or HOW. The most important for an artisan is having criteria. ¡Thanks again!

[@shibbleswentworth]

thanks for sharing your artistic technique, looks great! How do you color the slip that you squirt on before the main pour?

[@جمرالوداع-ح8ح]

ماهي المادة الأساسية أو الخامات المستخدمة في صناعة هذه الأشياء ومن اين نحصل على القوالب والتصاميم الجاهزه والألوان المستعمله

[@Ceramicadi]

wow - thank you for sharing !!!! great master class!

[@fdcollett3904]

This is such a helpful clip, thankyou so much for being so open and clear.

[@candacegreen6182]

Sorry don't know if you're already answered these. But if you could, that you for your time. 1. What kind of plaster do you spin on the wheel and how long to dry? 2. What were the layers you put on the master molder when finished drying? I heard you say shellac but I don't know what you mentioned after that. 3. Can you make a plaster mold for the master mold in a Tupperware container?

[@lamardon9723]

So you need to make a mold over sized to allow for shrinkage. And that information is where? Is it a standard figure that is always published for all clays everywhere? 😮

[@lamardon9723]

I need to clarify: if you want to duplicate an item for which you have no mold, what is the recommended procedure? Good instruction, and thanks!

[@grandexandi]

wow this was a master class!

[@BlairMaynard]

Sounding British, I wonder where she picked up the coffee habit.

[@KellyCasanova]

Very interesting, thank you!

[@joaniewilliams7174]

I would love to make a flower pot with the face and feet can you make a video on how to make a 3d slip mold

[@gailalbers1430]

This is a very good teacher & I think it’s a shame that her name does not appear .

[@ambikagaur5558]

just wondering the same. Did you get to know the name?

[@zendallx]

Wtf are you guys talking about? Its right at the start - it’s Julie Fewster

[@emilysheppardart]

nice one!

[@Bella-ef3cs]

Can you color the slip? If so how?

[@daleglenny1133]

Yes, you can add small amounts of ceramic stain or oxide (take care using any powder in your studio). Your supplier can usually advise you.

[@TheDreadfulCurtain]

Really good demo.,Thank You.. I would love to see how the plaster master is made, It seems like it has to be turned on a lathe or made via sledging? I would love to see the process. I also wonder what is the best kind of plaster to use for the mould making process. Both for the master and the mould itself, is there a brand you recommend for slipcasting specifically ? I would love to see more high quality demos like this. Thank you.

[@thakurshivamchauhan452]

TheDreadfulCurtain

[@jerrywhidby.]

I wish that I knew the name of this technique, but I have seen what she is talking about done with cement pots and plaster molding. pin.it/w72gm2ny6355vf pin.it/mt56e4ov7ljimc

[@JonathasJunior]

Hi, You should take some courses at Domestika, I would buy it easily

[@janiceabner8896]

so fascinating, thank you

[@MichaelSHartman]

Excellent demonstration. Thanks

[@syafiqahmad1806]

Do you know what are the factors that affecting the casting rate/time?

[@daleglenny1133]

Syafiq Ahmad The most important factor is how porous the plaster is, but it is also affected by how wet the mould is (from previous casting and humidity). I use a ratio of 7/10 (water to plaster) when making plaster moulds. More water will increase porosity but reduce affect how long your mould lasts and how robust it is.

[@sandgrains3418]

Raja Write how liquid clay that pours into the molds and materials used in it and its amounts.

[@convolution223]

how did she color the porcelain? what kind of dye did she use?

[@daleglenny1133]

0vrStart The slip would probably be colored with ceramic stain or oxide (looks like stain to me). She’s likely done a bit of testing to get the right quantities for the desired colour.

[@davidbecker2367]

I slip cast a small bowl and did a similar thing with the colored slip. I put a few drips in the mold and tilted it back and forth to create a pattern. After casting, the colored slip pattern showed up on the inside as raised areas. Does this always happen ? Can it be prevented ?

[@hobbyhermit66]

Very informative. Thanks for sharing.

[@THEWIELDBOYS8700]

Great video. However, on the making of the mold couldn't you throw a piece and glaze it as an alternative to the other method.?

[@leighrobison9388]

If you’re really good at throwing and being a production Potter!!! Lolol..not everyone is able to master that I guess...

[@azizeseyedmoradi2893]

Hello, do you need ceramic pots to heat the oven?

[@abdulahhossainy1026]

Dear julie fewster how can i get training for slip casting? how can i buy plaster molds?

[@technofeeliak]

Ca-darn that was interesting.

[@bradenwilson]

What is the ratio or percentage difference between the plaster master and final piece? Eg Plaster master is 10% larger...

[@stephaniesantaguida9503]

It depends on the clay. Each kind of clay will shrink up to a different degree but most pottery shops will tell you very precisely how much shrinkage you can expect. If you need a plaster master to create a very precise size of cup (such as for measuring cups), you can determine it based on the specific clay's shrinkage using geometry

[@-ideastalentbusiness4260]

Please I want to know that making the dough made of which way the cup, thanks

[@bom417]

yes! you turn the dough two time round the table and use two grils one cup vid.. welcome mister!

[@bbjo787]

What are the gray streaks in the clay?

[@samirhawash9038]

Please, can you write the raw materials in this work and whether these items are safe for food and drink or not, thank you very much

[@TheSlightlyCurious]

Very helpful, thank you!

[@TheMarnaiz]

As bisqueware is porous, could that also be used as a mould?

[@daleglenny1133]

MaZ No, not for slip casting, but you can use bisque moulds for slip and hump moulds (for rolled clay, not for slip)

[@sandgrains3418]

Please Write how liquid clay that pours into the molds and amounts

[@tarponjohn]

Excellent, I need advise on how to make my plaster master for a small coffee cup with handle ...do you know any pottery schools around Geneva thanks

[@nicksurfs1]

John Wijnberg you would either make one just like she did, then after your clay is leatherhard, you add the handle. This is what I would recomendable Or you can make a two piece mold with the mold split north to south down the center of the handle. But this requires much more work and you have to take the mold apart every time.

[@suneilnevgi8386]

Could you use core inside the pour? I mean you could use existing cup as a core? Nice work 👍👍

[@casia2005]

Suneil Nevgi no you can not just pour slip into anything. The vessel/mold has to be porous to absorb the slip.

[@davek.5939]

Nice video.

[@aman593]

Did i miss the part where the black stripes happen???

[@mythcrab6047]

Yes.

[@MrsKrolik111]

How did you get these black irregular lines?

[@daleglenny1133]

She is using a slip trailer (that bulb thing) to drizzle or “trail” slip of the same clay coloured with ceramic stain or oxide.

[@usmanarshad4736]

plaster of paris why it not thick at the botom

[@adismell]

What are those drip lines (or are they intentional patterns?) on the little cups at around the 9.30 mark?

[@bom417]

did you watch the video?

[@wilmasmith3974]

14 minutes

[@tinaperry3706]

How do I keep the slip from sticking to my molds

[@nicksurfs1]

Tina Perry once you pour your slip out, leave your mold upside down and wait a few minutes, the clay will continue to shrink and fall out of the mold

[@hossamslime9354]

Hi can tell us about compound of past

[@bom417]

compound of past .. wut?

[@madamsophia1503]

Hello, please what water resist do you use on the original plaster mold? Can you spell out the names? Thank you.

[@cadarnlearningportal]

Hi Jolene. Julie says in the video that she used Shellac. I hope that helps. Best, Amy

[@digidanshow]

What release agent was used?? She said the master was coated with shellac but then added that it was coated or "soaped" with a "mold making size"...Thanks

[@czbaterka]

Step one ! Go on google and search for ceramics courses. Or try buy books about ceramics art. 1 - Make a master from plaster. 2 - Mix alcohol with shellac ad make liquid solution of it. 3 - Apply that solution on your dry model. In very thin layer. Shellac clogs pores of plaster. 4 - Mix your lubricant time ! - We use mixture of soap flakes with oil and you need to stir it in the heat with mixer - Mix of oil and soap makes great fluffy creamy lubricant. 5 - Apply it on your shellac covered master, with brush. That fluffy cream is amazing release agent. 6 - Make molds from plaster. 7 - Put these new babies in water it helps get your master "pop" from your casted form. 8 - Let it dry for few days, if you have kiln-drying box ,good for you, it makes this process faster. 9 - Cast your slip in new form. 10 - Profit ?????

[@vinodjain876]

Nice

[@michelerodriguezlemay717]

Very professional demo, thanks! One question, are there any additives in your plaster to make the moods more absorbent? I find my molds make 2 pieces per 24 hours, do you have any advice for me please? Thanks.

[@daleglenny1133]

That’s about right (2 in 24 hrs), but you can speed up the time to dry out your soggy mould by putting it in a fan forced oven (with elements shielded... you can use a baking tray under or over the element) at between 50 and 60C absolutely no more or your mould will become brittle, powdery and fret. Otherwise, make duplicates of the same mould.

[@michelerodriguezlemay717]

Dale Glenny Thank you so much!