[8D] Interesting, but why starch and cloth? Why not try something even easier, and cheaper? I say this cause "I've done it. Get a bunch of old office paper, you know the kind thats tossed out, some wood glue, a cup of water and a paint brush (disposable one inch). So you've got your plug and a parting divider attached (I assume). Do one side at a time: Grease 1/2 the plug with a light coat of Vaseline. Cut the printer paper into strips appropriate to the sie of the piece your building. Drop them in a bowl of water to soak for a few seconds, then pull them out and wipe away the excess water, then apply them bit by bit to the plug. work your way down till the whole side (1/2 the plug) is covered. the water will stick the paper to the plug quite tightly if you rub on it a bit. Ok so we have one layer. Break out the glue and squirt a bunch onto this first layer, then take your wetted 1 inch brush and brush it all over the surface of this 1st paper layer evenly. Now, do another paper layer just like the first. Do a glue coat over this one as well. After this you can do as many layers as you like to get whatever thickness you want. If your going for a really thick mold, you may want to do 3 or 4 layers and alow them to throuroughly dry for a few days before adding more. When your done it should pop off and leave you with a mold thats every bit as detailed (if you took your time in the first step) as a fiberglass one. You can coat the inside with a few coats of polyeurethane either waterbased or oil if you want to use the mold for more than one casting.

Anyway, give it a shot, its easy and it costs next to nothing. Its worked for me.

Regards ZZ.