What type of resin has the lowest shrinkage ratio?

Not sure. I used the Smooth-cast 320 and it said .01

The 321 and 322 were .007

I would think the resin that takes longer to kick would have the least shrinkage.


FB
 
You want to ask the resin vendors about this. Ask them to recommend a formulation and perhaps fill for your application. That's the direction my research took when I was looking into this sort of thing. LOTS of options out there. ;)
 
I use Sil-Plastic from SilPak almost exclusively and I think it's shrinkage is in the thousandths of an inch. It's very good stuff, and is about the "high end" of mid-priced. :)

-Sarge
 
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