Hey bud. I got a bit of advice for ya.
I just finished my P2 head undermask and had some trouble with it and i would have done it differently had i known before hand. So i would like to pass this wisdom on to you.
I sculpted my bodysuit using WED CLAY then i clear coated it and sealed the sculpt and before molding i made the dividing wall out of WED clay as well.... BAD IDEA.
If i had thought about it before hand and not rushed it iwoulda had ALOT easier time. Next time around for MY bodysuit suclpt i am going to use sheetmetal. I think its called flashing by contractors, its a thin thin aluminum metal that u can buy in like rolls of probably 10 feet and its only about 10 inch wide. This stuff would be perfect for a dividing wall.
The wed clay is a NO NO becuase when u do the wall it works fine but the process of REMOVING it to do the other half is where it sucks. I couldnt tell where the WED CLAY wall and my WED CLAY sculpt began and ended, The result was i messed up the sculpt bigtime and had to resculpt it.
Use the sheetmetal like so....
Batman Dead End pic.
I tried doing a search on home depot.com but i couldnt find the metal flashing. It is used for siding a house around windows and awnings i beleive. Contractor use a machine to bend it at right angles and such then cut it to fit.
Its there and it comes in big rolls.
This is what i am gonna do next time on any sculpture.
have you considered doing a Fiberglass mold?