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November 9, 2008
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Trophy head by flintlockprivateer Trophy head by flintlockprivateer
Dinosaur trophy head, carved in polystyrene foam and coated with polyurethane. About 3 feet long, 2 and a half feet tall
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:iconprivateside:
I'm a theatre techi, and I find that to be incredible. [link]
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:iconmyndtwitch:
Myndtwitch Nov 10, 2008  Professional General Artist
I see...
I'm trying to make a scarecrow for next Halloween.
I sculpted the body and almost finished with the head.
If you don't mind I have a few questions since I haven't done anything like this in almost 10 years...
Do you coat the foam with anything before you put the polyurethane?
What kind of polyurethane do you use?
Can I get it at hardware stores or special order?

Thanks
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:iconflintlockprivateer:
flintlockprivateer Nov 10, 2008  Professional Traditional Artist
This piece was sprayed with urethane using an incredibly expensive machine, but there are other ways to coat styrene foam. I would use Epoxy maybe a version with a 30 minute cure time, done in 2 or 3 coats. There are 2 part urethane compounds that you can mix by hand and paint on, I haven't done this in years but I have ordered material from a company called Futura coatings. The cheapest way is probably to coat the foam with a thinned out spackle and sand smooth. then doing a couple brush up coats with polyester resin. Another way to seal for for the use of polyester resin is to cover the foam with tin foil using spray adhesives like super 77 as long as you use very light coats the glue won't melt the foam. You just have to have a very good seal or the polyester resin will melt the foam very aggressively. Hope this helps. J
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:iconmyndtwitch:
Myndtwitch Nov 11, 2008  Professional General Artist
Cool.
In the past I was instructed to use wood glue then the resin.
The only problem I had was the wood glue needed to be brushed on a little to thick for my taste.
I appreciate the tip.

Thanks
Jason
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:iconflintlockprivateer:
flintlockprivateer Nov 12, 2008  Professional Traditional Artist
That is an interesting technique, I have never heard that one before. Cool.
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:iconmyndtwitch:
Myndtwitch Nov 10, 2008  Professional General Artist
Awesome
Did you do this all in one piece?
Are the teeth created separate?
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:iconflintlockprivateer:
flintlockprivateer Nov 10, 2008  Professional Traditional Artist
Thanks, the teeth and tongue were carved as separate pieces as well as part of the lower jaw. Then assembled after hard coating.
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