Help Req in casting Heads

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Help Req in casting Heads

Postby sicilian » Thu Dec 13, 2012 3:25 am

Hi,
I would like to try my hand at casting heads.
I would like to find out, how do you guys setup a mold for a head and to maintain its peg hole

Do you
- Use 2 pc mold?
- Use 1 Pc mold?
- Is the mold for the head upside down when pouring or rightside up?

I've read a bit off the web and also watched some youtube videos, but am still not sure what is the best way to go about casting a head
Any help or info or link to a decent website is much appreciated!

Rgds
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Re: Help Req in casting Heads

Postby Green Skin » Thu Dec 13, 2012 3:44 am

I've got a few PDF's that cover how to mold and cast heads. They are from Black Arachis and they are the same PDF's I used when I was learning how to cast, they should answer the majority of your question. Give me an email to send them to, or tell me where to upload them for public viewing, and I'll gladly share them.

Generally a 1 pc mold is what you'll want for casting heads. I've heard of people using 2 pc molds, but I have yet to see a head I can't mold using a 1 pc.

Generally you will be pouring the molding material onto an upside down head. This allows the material to sink into the neck hole and it prevents airbubbles from forming under the nose. Air bubbles are to be avoided at all costs so you want to position the head upside down since it minimizes bubble when molding, and also while casting.

Honestly it seems a lot more complicated than it really is. Once you do a few of them you'll get the hang of it in no time. Also don't be afraid to mess up a mold or two, it's part of the learning process and everyone does it at some ponit.
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Re: Help Req in casting Heads

Postby sicilian » Fri Dec 14, 2012 9:59 pm

Do you attach the sprues like in the tutorial, at the head area? or inside the peg hole?
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Re: Help Req in casting Heads

Postby Green Skin » Sat Dec 15, 2012 12:00 am

sicilian wrote:Do you attach the sprues like in the tutorial, at the head area? or inside the peg hole?


Attach them like in the tutorial, on the top back of the head. You don't want to put them inside the peg hole for a few reasons 1) Then you won't get the peg hole in the casts and you'll have to drill the peg hole out everytime, and 2) you're going to get air bubbles in the chin area. You want the sprues to be attached where no air will get trapped when you cast it. Remember the sprue becomes the pouring point when the mold is made so you don't want any part of the head above the sprue because it will trap bubbles.

lol this is hard to talk about without pictures.
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