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For those of you that know about Instant Mold;

1) What do you think of it?
2) Good to use or bad to use?
3) Worth the time to use it right?

I use Oyumaru which is basically the same as Instant Mold. For push molds of small stuff, it's great. I even use resin directly into the mold without a mold release and the molds comes out fine. For example, except for the knife, all Imperial Guard items on the objective markers are resin molds. The Imperial Aquila on the rock in front of the knife is a mold made from the eagle on the "hood" of a landspeeder.



I like the fact that if the mold isn't good, I just have to reheat and restart. I also use plaster to cast some terrain pieces and it works great.

is a 2 part Epoxy useable in Instant Mold then?

Yes the fact that it is completly reusable is amazing and a complete lifesaver!

Yes, I used Lepage SpeedSet Epoxy which is a two-part epoxy resin. The first time that I tried it, I didn't used any mold release such as vaseline. I figured I'd trash the mold as it wasn't big. To my surprise, the epoxy resin just snapped out of it without any problem.
It picks up detail good if it's hot enough, as it cools it gets harder and picks up less detail. I use a plastic sheet on which I place the object I want to cast and then press the Oyumaru to the object and the sheet. That way I get a flat surface on the mold. I square off the side with a plastic popsicle stick. Can't recall where I got the stick but it works great.

I'm thinking about getting some to make my poisoned wind globadiers (converted from plague monks).

I don't want to sculpt 10 heads, so I'm thinking of sculpting 1 or 2 and instant-molding the rest, or perhaps making a mould of an existing mask and using that. What's instant-mold like for creating molds of things such as heads/backpacks etc in greenstuff?

Like (Hypothetically, to avoid the ire of GW lawyers) if I took a blob of instant mold, and jammed a skaven plague monk head into it, let it cool and then pulled the head out, how good would the mold be or would I need to make it a 2-parter?

From the tutorials I have read you'd Ned a 2 part mold to do that and as far as GW is concerned if you dont sell it you will be fine.

I've used Oyumaru, as has been mentioned earlier in this thread. It's the exact same stuff and you can get it for significantly cheaper in greater amounts. I've only done a test casting so far, but it came out good. I just didn't do a great job at setting up the molds in the first place so they were a little out of alignment.