Prop: Shop - Molding & Casting 101: Slush Casting

[@KurtisJoseph]

I just made a Batman Dead End Cowl mold and cast it. Dude, 3D printing has made my life so fun. It opened the door to so many productive hobbies.

[@KaleSchlegel]

I feel you. But my brother's do the 3d printing. I clay sculpt mine and mold then cast. Learning as I go.

[@bioburn1915]

happy pi day! I return to your channel every year for instructional guidance since anime expo is a couple months from now and I always attend. I'd like to start learning making pieces casted in plastic soon, really glad to see I've come back in time with all these videos up. Thank you so much

[@yandre20005]

Wow. I would pay to learn all of these techniques. So inspired.

[@alexcarter8283]

I've been hearing this term tossed around all of the prop community, but since I haven't really been into casting things up until now (I'm still working on getting my foamsmith skills up to where I think they should be haha), it didn't really mean much to me. But, now that I'm getting ready to mold up and try to cast the sculpted masks that I made not long ago (another first!), watching this definitely dispelled the mysticism behind the word. Professional sounding terms always make techniques sound scary haha

[@michaeltheuy4065]

This may be a stupid thing to ask, but when creating a mask for my own face or designing something to roughly fit my face how would I go about in doing so? also great video, as someone who may want to try this kind of stuff sometime one day, maybe a couple of years from now your video was really confronting and good to watch.

[@user-vc5rp7nf8f]

thanks. very clear, helpful. thanks for showing the resins you used and the process

[@punishedprops]

Sure thing, happy to help!

[@HappyEmo64]

Hey, could you guys do a video on Polly urethane Cowls? :) thanks, love your work!

[@JonathonPrieston]

+Bill Doran I was actually wondering the same thing, and would love a video on it. By the Way amazing videos!

[@Reboot153]

This is a great video on rotocasting and answered a number of different questions I had about it. One question I do have is: When would you want to use rotocasting over vaccuforming for different molds? Is there a hard/fast rule for when you'd want to use one over the other?

[@Reboot153]

So if it's a small/medium item with intricate detail, that's when you want to rotocast. Larger or simple/smooth items should be vacuuformed. Got it. Thanks!

[@Elifissa]

"Poor your hungry eyeballs"; you knew I watched 10 videos in a row xd thank u , ure amazing!

[@ghoulstein9557]

for the hard shell mold, could i use Plaster Of Paris as a substitute instead of using fiberglass?

[@souldrux]

ghoulstein stone moulds could work but you would have to strap it or find some other way to keep the two halfs together. And I would use a denser plaster like hydro cal. You really just need a ridged outer shell to keep the silicone from losing its shape. Good luck!

[@BrendansBrew]

Is it possible to slush cast silicone into a wood-like object? I want to coat the inside of a bottle-gourd with food grade silicone.

[@kovaliktube]

When slush casting in a two part mold with a pour spout, how does the pour spout get filled in? Wouldn't there be a hole left where the pour spout is? Thanks :)

[@Arnoldman-ep9gw]

What if you have a relief sculpture, too large to rotate. Can you brush in the resin and will you see brush marks

[@gregr8299]

Any videos you can suggest for brush on casting

[@thepsychoseptic3373]

What if i wanted to make a mask/helmet for airsoft? Do i use go bed glass and resin in steps like Resin then fiberglass then resin then fiver glass Repeat a few times till u get a good thickness?

[@MalonzeProductionsGaming]

What is the best resin to use for slush casting? Or does it not matter?

[@simonandersen7942]

Can you slush cast rubber? I need to make a smaller object, around 2"*2" I reckon, in a clear bendy/soft material, with a smaller 0.8"*0.8"ish object embedded in the middle. My idea was to slush cast a layer or two of clear rubber, place the object, and then continue with additional layers. At some point perhaps making the rubber pool in the middle around the object, more so than around the edges. To not get it too thick. I'd like to be able to make these on demand (but not a high volume thing). Is there a better way, or is this doable? I have someone who can help me do a silicone mold.

[@constantchialli9548]

Hi ! I have a question :) how much resin did you put in a cast ? :)

[@bramcuyvers1288]

How is the product called you put in to reproduce? Is it liquid plastic? Is it Strong? Breakable? Safe to wear? Many thx

[@braddeputy8185]

Do you have to keep the mold moving for the 5 minutes between coats?

[@MrThatguyjakeblohns]

Any tips on how to keep resin from building up in a deep crevice such as a nose (particularly an elongated nose)?

[@punishedprops]

You may want to try brushing in epoxy resin instead of slush casting: www.smooth-on.com/product-line/epoxacoat/

[@MrThatguyjakeblohns]

@@punishedprops thank you so much

[@LoneDeathWolf]

Another awesome vid Mr. Doran. Keep up the good work :)

[@KRocksU]

if you spray a release, would you be able to slush with rebound 25 to make the mask, even though you used rebound to make the mold?

[@Luke101]

that's risky, you'd be better off using a urethane rubber

[@zachcowley779]

I really got to ask, do you do any math when trying to figure out how much material you might need for a project? For both pouring silicone to make molds, and when pouring resins? Or has it always been an eyeballing for you?

[@injectionAI]

can you slush cast a transparent mask? Or will it be too optically warped?

[@angelusnielson7135]

Can you make a tolet with flush casting....?

[@Abdega]

Hopefully it wouldn’t be too crappy

[@Gogtenks]

If I do a mask like this one can I use only Smooth Cast 65D? Btw, your videos are awesome

[@oderusmaximus909]

could you please do a video on backfiling a mask or prop using expanding foam. I dont think I understand the process. thank you. Brian M

[@punishedprops]

I'll try to cover that in a video the next time we do it.

[@cocobutterfo]

My slush cast never comes out right. Either to thin, cast pools more to another side so one side is thicker than the other. Do you have a video on how to make a mask like this with a back mold to push in so the mask is even on all sides?

[@samwildman2093]

Make a cast of the mould (that is a female mould so you will have the reverse i.e a male counterpart). Use fiberglass for rigidity and keep the layers light. Alternatively you can vacuum form or maybe even use a plaster cast if no access to a vaccuum forming machine!

[@benlee5039]

Could you make a whole suit of armor with resin? Like the chest, gauntlet, etc.

[@punishedprops]

You most certainly could

[@shartslaw322]

Just curious, how hard does that slush casting become once it's hard?

[@samuelgonzales8542]

I have a question. I've started with working with pepakura and I'm working on making a helmet through this method once it's all folded into place. The one problem I have is even if there are videos of how it works, I work with hands on training better. Is there a way y'all could teach me other than through videos?

[@grey-agent9389]

How did you go about making the hard shell on the outside?

[@matthewharden2437]

hello I was wondering is there a type of polyurethane rubber that I can roto cast with? I want to make a hollow rubber flexible casting of some custom action figure clothing I have made but I can't find anything that works. The stuff I use is flex it 90 and it cures way too fast. Like 3 mins. Could you please advise me with this?

[@punishedprops]

I would chat with the folks in customer service at Smooth-On! They know their products really well and can suggest the best options for what you're trying to do

[@Fuzzyfire]

is the original mask that you got the mold off of made from a huge clump of clay or something like that?

[@Fuzzyfire]

ahh, i see. thank you for the reply.

[@rudewizard85]

I dont expect a reply, but have you ever tried to do clear epoxy slush casting a mask? That's what I'm going to attempt today...

[@punishedprops]

I have not! I've done a fiber glass and epoxy cast by brushing into the mold: kzbin.info/www/bejne/ipKagHmfq7V2ebc

[@gabrielgibbon10]

Are you going to do a full head helmet at any point?

[@gabrielgibbon10]

+Bill Doran oOkay thanks

[@lucasboisneau4256]

Cool ! If ever I attempt to mold my iron man mask (if I manage to finish it fingers crossed :), do you think I could use metal powder to make it shine and metal looking or is it too "rough" ?

[@lucasboisneau4256]

+Bill Doran ok thanks a lot for answering ! Legacy effects did a great job for the suits !

[@ozzman39]

WOuld this method work for casting a proton pack shell? is the finished product strong enough to handle building a pack? made my shell with a 3d printer

[@punishedprops]

That's a great question! As long as you reinforced the inside with fiber glass I think you'd probably be okay?

[@ozzman39]

@@punishedprops stuff looks pricy probably wouldn't be cost effective to do multiples? Thoughts?

[@deathtrooper7104]

Whenever you are finishing your mask what method do you use to cut out the eyes?

[@punishedprops]

I've got a cutting wheel on my rotary tool that does the job quite well, but the resin is thin enough that a sharp blade works too.

[@matheusmota134]

Bill, I'm thinking about using polyester resin for slush casting for a college project (replicating 19th century bottles). Is it possible? I nead it to be glass like and kind of a cheaper resin.

[@matheusmota134]

I've read thet it gets to a gel consistence in about 5 to 10 minutes and then you cant work it any more.

[@homelessjoe]

Did you make the initial dragon mask, or was that purchased? If purchased, could you provide link please?

[@punishedprops]

We build everything in house unless it's a stated mod video. - Paige

[@homelessjoe]

Thank you for the quick reply. Excellent replica.

[@larsvanwijgerden9246]

Another great video!!

[@ShotgunAndAShovel]

does the 300 come in clear?

[@OscarGoldenImageTubeLarrea]

I am making a Psycho Ranger helmet and i was wondering would i beable to slip the mold off due to the fact it has wing like ears

[@OscarGoldenImageTubeLarrea]

+Bill Doran ok cause. was worried about it ripping so maybe on safe side make cut seem in the font is instead of the back

[@migs669]

i want to make a monster mask in the style of the masquerade masks how would go about doing that?

[@adamkurtz665]

I am trying to make a silicon mask, something that moves with you face. Can I use this technique, if so what materials would I need?

[@punishedprops]

That's something we haven't tried ourselves yet. This video should give you a little insight into the process: kzbin.info/www/bejne/hIfapGOorrhmY6c

[@nixland]

Between layer of resin, do I have to wait the previous layer to cure first?

[@punishedprops]

+nixland Nope!

[@nixland]

Punished Props ok thanks

[@skinbagmusic9530]

I'm gonna start casting joey jordison masks since an original '83 is so hard to get

[@SightlessBlind]

How reliably do the casts come out with no bubbles or miscasts?

[@punishedprops]

Slush casting is pretty reliable, since you can see the resin as you cast to make sure you get a nice, even coat.

[@asimkhan4733]

If I can't get a hold of smooth-on resin, what resin would you recommend I could use that is skin safe?

[@samwildman2093]

Once cured the chemical is inert meaning it should be safe providing no amounts of dust reside on the surface even then will just be itchy for most people, that being said doesn't take 5 seconds to wash dust off :)

[@bradlyely]

Builder Ann?

[@chrissoto7840]

Is there any way I could thicken up the resin.. to the brush it on my molds?

[@punishedprops]

Yes, smooth on has a series of products called Ure-Fil meant for that very purpose: www.smooth-on.com/product-line/ure-fil/

[@chrissoto7840]

Ok ill try that, thank you for replying back, love you KZbin channel, really, really helpful thank you

[@kennethgorman5524]

probably a silly question. Is it possible to slush cast a flat object?

[@punishedprops]

Like a sword blade? You can, but you'll want to take care to add support of some kind, as thin casts can be very flexible, even after fully curing.

[@ghostjason1163]

how do i make a buck for vacuum forming same way?

[@SHADEZOWNZ]

How much resin did you put in the cup to pour into the silicone?

[@punishedprops]

An ounce or two for each layer. Every mask is going to be different so you'll have to experiment.

[@Myaubgoalis1mil]

Hello! people I have'd a question for a long time can I use fiberglass resin?

[@Myaubgoalis1mil]

***** ok thanks.

[@nixland]

What is the difference between 65D, Onyx and 321 ? thanks

[@punishedprops]

You can compare all of their properties on Smooth-On.com

[@cakelton]

Can someone answer this please? What can I use to cut the helmet after i slush cast it to make eyeholes? Also what can i use to smooth it after i cut it? Someone please answer.

[@syd_the_squid]

you can use a utility knife to cut it and carefully use a dremel to smooth it, or you can use some sandpaper.

[@cakelton]

ty

[@bruinflight]

I've been making a lot of molds lately too! (Those dirty dishes I forgot in the sink when I went on a week-long trip ^_^)

[@icedcoffeeart2175]

could i make a plaster mold for this technique?

[@punishedprops]

If you were casting in silicone, you could use plaster. But you typically don't want to use a rigid mold making material for rigid casts.

[@sausagethegodofcurry]

is epoxy resin a good substitute?

[@punishedprops]

It might be tough for slush casting - epoxy resin is designed to slowly cure over time. For slush casting you ideally want a resin that cures in 10 minutes or less to get a good, even coating.

[@thomasmccarthy8091]

the problem I have is getting my edges thick enough. what can I do to fix it?

[@punishedprops]

+thomas mccarthy That comes with practice. You try to slush it well over the edges of the mold. It will get messy.

[@arechikitsune]

I really want to know how to add texture(leather in my case) to a master.I was looking thru your vids but didn't find anything. Please help

[@arechikitsune]

+Punished Props thanks. Will you make a video on applying leather texture to a master?

[@GLSentinel1940]

Does this method work with latex/foam gloves?

[@punishedprops]

For casting masks in latex, you can use a method called "slip casting". Here's a tutorial: kzbin.info/www/bejne/lXWVfKlteb2LetE

[@GLSentinel1940]

Thanks

[@mr.excitables6802]

Can I use smooth cast onyx for the casting

[@punishedprops]

You can use whatever you want! We recommend a couple coats with 2 kinds of resin, one hard and one slightly more flexible. Onyx is a great hard resin.

[@maxabeles]

Thank you!

[@marianogarcia3973]

What is the average cost of this process?

[@lonevigilanty8221]

How do I order a prop?

[@kaiyodei]

so if i made dolls, i make the heads with slush casting?

[@chrisharris5535]

Teach me, oh great master!

[@Merjedmedia]

Can you have resin thats flesh colored

[@punishedprops]

Sure! You just need to add pigments to make it the color you want

[@RatsIslandTV]

Good Vid, thanks!

[@Proutprutproutprout]

Pfou, I tried this and Its notbas easy as I though. I didn't take into account that the resin would pool into the cavities, and since the inside of the mold is exactely the shape of my face it takes away space for my nose, lips, chin....

[@JcAndEdItion]

you guys should make some fall out power armor

[@bhaumiknagevadiya1593]

Great ,

[@celikart]

cool

[@punishedprops]

Thanks very much!

[@bcostell69]

LOL flush casting is when I try to do it

[@young1674]

I have a mask u guys can make

[@VariablePenguin]

1:12 Holy shit! Witchcraft!

[@jesse_giovanni]

I love marble madness lol

[@pelilevine2478]

can you show me how to mold a Lego man

[@TazPessle]

"... Welcome down to the prop shop. Im builder Ann"

[@punishedprops]

Hah!

[@krebbichris818]

Flush casing.

[@CapnRumple]

You been drinking Bill? Sounds like you've been "lush casting".

[@ninjanova500]

"be patient ... and in no time you'll be casting masks just like a pro" so confusing

[@Freeman42718]

Make some molds, but use you own master.

[@Freeman42718]

+Bill Doran I just had a guy ask me if the "stuff" you used in this video series would work on one of my kits.

[@Tolderian]

Well bro made his video private so... guess he doesn't want to share his secrets anymore.

[@ViliousTorch]

v

[@LineaDeus]

*Old school here! That is Not slush casting, Any casting that involves revolving the mould to coat the interior is Roto casting, even if you are Roto casting with your hands. True slush casting explicitly does not involve rotating a mould. True slush casting is filling a resin with a material that does not run or shift when put in the mould and slopping and slushing over a gel coated interior. Like a mat strand filled resin. Slush is medium that holds itself together. this is bad education.*