I've actually used the silicone molding method in that instructable. Naptha and clear silicone caulk makes for a great 2-part mix. I never thought of it for printing since the combination isn't UV reactive, and I've not known any way to make it UV reactive.

What kind of catalyst to oil ratio would you be starting with? Tung Oil seems to be dirt cheap, but in America Curcumin is being sold as a wonder drug... At wonder drug prices.

If it only needs a little bit of the catalyst, then this could end up being a very affordable resin, even compared to MakerJuice.