Sculpting scale for a mold question (1 Viewer)

[Flammenpanzer]

All of you who make your own figures, I have this question. Do you have to scale up the figures to allow for shrinkage when molded? Or is the rtv rubber pretty good with shrinkage? Thanks

 

[blaster]

I've never had to scale up my masters and I do cast in RTV moulds.

 

[Flammenpanzer]

Thanks for the info. I wasn't sure if they needed to be a little larger. I checked out several RTV manufactureres and the better ones have a lot less shrinkage.

 

[trooper]

A certain amount depends on the metal you use. If you mix your own you might possibly find a degree of shrinkage, it is best to use a consistant commercial alloy. You should also try to avoid using castings as masters as shrinkage increases the more generations of castings you use. Another tip is to make a "dolly" figure and always use castings of that to produce your master patterns, that way you end up with a consistant size, this is why some maker's products vary wildly from figure to figure.

 

[Flammenpanzer]

Trooper,
Thanks for the info. I am trying the "dolly" method and was not sure if I needed to scale up.