Amount of Silicone for Molding Vader Dome

[Celtic007]

I am doing a lot of modifications to my Rubies Vader dome and I would like to be able to mold the helmet so I have one piece instead of plastic, body filler, and fiberglass.

The only think I'm unsure of is the amount of silicone needed. The trial sizes from Smooth On are only $30 and the only other option is the gallon which is $183. If I can use like two trial sizes I think I might give this a shot. So, would that size work for a Vader dome?

Thanks



Also, if this isn't the proper forum, sorry, I thought it would go here due to the relation to sculpting and mold making.

 

[zorg]

is it for just one casting?

you could probably get away with very little silicone.

or you could use fiberglass as the mold with suitable release agents of course.

a vader helmet is a pretty basic shape with no major detail.

 

[Celtic007]

I would like to be able to re use it and make future castings if needed, with a whole mother shell jacket and everything.

I just know its a pretty big surface and want enough silicone to cover it thick enough.

 

[PoopaPapaPalps]

I would go with 2 or 3 sets of the trial unit if you want to do a brush-on mold. I'd also recommend getting their Thi-Vex thickener to not only speed up curing, but it helps save silicone (makes it less runny depending on how much thickening agent you use).