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Permalink Reply by Simon Tytherleigh on February 2, 2019 at 11:28am

The picture shows quite a bulky figure, and this can be a problem in silicone, which is quite heavy. There is a foam silicone, called Soma Foama, but it is expensive and sets off in 90 seconds!

If you can make that puppet in foam latex, it would be the best way to go. Any chance of installing some fume extraction in the basement? You could use the sort of fan sold for bathrooms and some flexible ducting to make a temporary extractor.

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Permalink Reply by StopmoNick on February 2, 2019 at 9:11pm

What a fantastic figure!  And yes, the bulk will make it difficult to animate in silicone.  It will be heavy, and the armature will need to be stiff to bend it very far at the waist without the silicone making it bounce back.  If you can get Soama-Foama silicone foam to fill it with that could help.

I made 2 Sumo wrestlers, one 10 1/2" tall, from silicone.  The first cast, with my usual 2 strands of 3mm armature wire in each leg and spine, could not be animated.  The arms could move a bit, but not as far as I wanted, the waist could hardly bend at all, and the legs struggled to hold the weight. I stripped it off and made a heavier armature with 3 strands of 3mm wire in legs and spine, and it was usable, but still couldn't bend as far as I would have liked.  And it was very stiff and hard to animate. 

The second wrestler was 12" tall and correspondingly thicker, and I used foam latex for that.  2 strands of wire were fine, it weighed about a third as much, and was easy to animate.  But I did get some wrinkling in the skin, which you don't get with silicone.

I can't buy Soma Foama here, but Ron Cole in NY has used it, and it does bond to the silicone skin, and make the puppet lighter and easier to bend.

I don't know if I can post this short test video of the 2 puppets directly from my computer  without uploading it at youtube or somewhere, I'll see... No, I need to post an embed code from Youtube or similar.  

The other difference is in the way they catch the light, the silicone is a bit translucent and picks up a glow from backlighting that the foam latex does not. 

After 7 or 8 years the silicone puppet is still in good condition, but the latex puppet is showing signs of ageing.  So solving the weight and stiffness problem would be well worth it.

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Permalink Reply by Count Croc on February 2, 2019 at 9:12pm

If you use silicone, bulk the armature like you're making a build-up puppet and it should be fine.

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Permalink Reply by StopmoNick on February 2, 2019 at 9:17pm

I bulked the armature with cushion foam, like I usually do, but the silicone soaked in.  It ended up just as heavy as solid silicone, but even stiffer, because the foam in the silicone reinforced it and made it less stretchy.  For my second cast, I left the foam out, except for a thin coating of thin foam over the wire to give the foam something to grip on to.  If you could seal it all completely so the silicone can't get in it might work, but even a small gap and it soaks in like water into a sponge.

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Permalink Reply by Simon Tytherleigh on February 3, 2019 at 3:05am

Sealing cushion foam can be done using builder's silicone, which is thick and doesn't soak in. But you would need as Nick says to make sure there isn't even a tiny gap for the liquid stuff to soak through. I have only done some experimenting with this so far, but will soon be making a bulky blacksmith character, so will try it out in earnest.

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Permalink Reply by Jet Zhang on February 3, 2019 at 9:01pm

Thank you guys!

I think I will keep going with foam latex, while the arm/hand I will use silicone. I used GM foam latex before. It is very good if properly control the ration/time when building the puppets. The only concern is the puppet's hands. The thread of finger sometimes goes out because foam latex is not strong enough. 

I still have a conventional oven which I used to bake foam. It is perfect for baking the mold of small puppets. 

I am in Toronto and there is a distributor of Monster maker foam latex here. I never tried it but I think it has pretty good reputation. 

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