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video567 Profile
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BOTB Member

Registered: 09-2003
Posts: 70
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Making an Ultracal Mold of a Clay Sculpt


hi guys i have read alot of info on making molds of a clay sculpture but im wondering what do you suggest the nest would be for a batman cowl. only reason i ask is because of the ears? if you have a link or maybe if its archived somewhere im willing ot read to save you the time writting. thank you!@

you can see what i want to make a mold at http://boredathome.0catch.com


Last edited by Deadly Lemur, 3/18/2006, 10:42 pm
3/31/2004, 2:57 pm Link to this post Send Email to video567   Send PM to video567
 
Deadly Lemur Profile
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Registered: 01-2004
Posts: 3661
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Re: making a mold of a clay sculpture


a lot of us like to use Ultracal 30 for our molds. i'm not sure about everyone else, but for my cowl we started out similar to how you are making yours. we put oil based clay over an existing piece (an ed beyond cowl, to be exact), and then to make the mold we mixed up our ultracal and put a few light layers on. (work quickly though, or your plaster won't bond & the layers will crack away from each other.)

while tim (blackbat) was mixing and applying the plaster i cut up strips of burlap, maybe 1.5 inches wide and 5 or 6 inches long. we coated the strips in more ultracal and then started applying those as well. having burlap inside of the plaster makes for a stronger mold (like rebar inside of concrete). after we had several layers we let the whole thing dry, then pulled out our sculpt and the mold was finished.

i'll put up a couple of pics of the process, the finished mold & the finished cowl in a few minutes so you can get an idea of how it looks.

you should also check out the archives at the old board ( http://pub19.ezboard.com/bbrotherhoodofthebat ), there's a lot of helpful info there. look under "working with latex, molds & plasti-dip", it's the very last forum in the list. here are a few threads that i was able to find with a cursory glance at the first page, but keep digging, you'll end up finding the answers to questions you hadn't even thought of yet. :wink

http://pub19.ezboard.com/fbrotherhoodofthebatfrm48.showMessage?topicID=111.topic

http://pub19.ezboard.com/fbrotherhoodofthebatfrm48.showMessage?topicID=128.topic

http://pub19.ezboard.com/fbrotherhoodofthebatfrm48.showMessage?topicID=129.topic

Last edited by Deadly Lemur, 3/31/2004, 4:54 pm


---
~Heather~

~ambivalent? well, yes and no.~


3/31/2004, 3:41 pm Link to this post Send Email to Deadly Lemur   Send PM to Deadly Lemur
 
Deadly Lemur Profile
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Registered: 01-2004
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Re: making a mold of a clay sculpture


ok, here's a photo album with the progress pics from my cowl (and some other pics of suit stuff)... i took pics of the mold and put those in there, too. i put captions under some of the pics for you, so check for those. hope this helps give you an idea of how we did it. sorry i didn't get any of the actual ultracal application, but we both had our hands covered in it and we had to work sorta fast, so... btw, the gauntlets were made in the same manner, but i don't think we did the burlap on those.

http://f2.pg.photos.yahoo.com/ph/deadly_lemur/album?.dir=/Batgirl+Suit

---
~Heather~

~ambivalent? well, yes and no.~


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BruceWayne131 Profile
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Dark Knight

Registered: 02-2004
Location: Fords NJ
Posts: 500
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Re: making a mold of a clay sculpture


Hey Cutie,the 2 of you did an excellent job on that cowl. Both of you should be proud !

---
"You get the ice, I'll get the Iceman"
Visit my photo page !
http://photobucket.com/albums/v123/brucewayne131/
http://www.freewebs.com/stmoritzguitars/
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video567 Profile
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Registered: 09-2003
Posts: 70
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Re: making a mold of a clay sculpture


wow everyone thanks so much im looking through all the info.. this is gonna be pricy.. i really appreciate all the input and advice
4/1/2004, 1:17 am Link to this post Send Email to video567   Send PM to video567
 
video567 Profile
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Registered: 09-2003
Posts: 70
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Re: making a mold of a clay sculpture


thankss i also found this in the archives

martymoe
My Mini-Bat can kick
Mini-Me's butt any day!
Posts: 442
(11/26/02 9:03 am)

   Re: Cowl casting question...
--------------------------------------------------------------------------------
 the oil based clay will work fine for the ears.
when you get ready to mold your sculpt build your retaining walls out of water clay, that works very well, be aware of your critical corners. MAKE SURE THEY ARE AS CLOSE TO 90 DEGREES AS POSSIBLE.
mold your first side (front or back) then take out the walls, apply your release and the other side.
regular old cooking spray works fine as a release.
also i would put some small clay sticks on your first side.. that will make pry holes between the mold halves after you put on the second half.. it helps to get it apart.

....This is why Superman works alone.
 
just posting it here just incase someone may need this info too. thanks again
4/1/2004, 1:26 am Link to this post Send Email to video567   Send PM to video567
 
Deadly Lemur Profile
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Re: making a mold of a clay sculpture


glad i could be of help. and yes, this is an expensive hobby... anyone who makes their own stuff usually ends up spending a lot more than someone who can just buy a costume. but it's worth it to have the satisfaction of creating it yourself and having it exactly as you want. ask anyone who bought a rubies suit and then eventually had to spend a lot more money & time making something acceptable. and some of us (like me) couldn't buy a costume if we wanted to. i've only seen one other person do a costume for this batgirl and it's the girl in that photo with me at dragon con. i believe hers was made of pvc or something.

thank you lou! we are pretty proud of that cowl, not too bad for a first effort at any type of costuming at all. can't wait to wear it again next year! :happy

---
~Heather~

~ambivalent? well, yes and no.~


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GoldenAge Profile
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Caped Crusader

Registered: 02-2004
Location: london
Posts: 1262
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Re: making a mold of a clay sculpture


Am I right in thinking that this way you lose the sculpt to get the mold? - and that THIS is why you guys keep your clay damp while you work?
4/3/2004, 2:18 pm Link to this post Send Email to GoldenAge   Send PM to GoldenAge
 
Deadly Lemur Profile
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Registered: 01-2004
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Re: making a mold of a clay sculpture


yes, you're right in thinking that this is how the sculpt is destroyed. we were very surprised that our sculpt stayed as intact as it did when we pulled it, that seems to be rare.

if you use oil based clay you don't need to keep it damp. oil based clay stays exactly as it is, and never dries out. water based clay, however, needs to be kept damp or it will dry and crack.

---
~Heather~

~ambivalent? well, yes and no.~


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