I have been looking for a way to make a green jello prop for my puppet who always messes up the story by including green jello.  It helps the young ones identify when he messes up the story and they call him on it. This colored silicon could work for the jello prop.  I also decorate cakes and I have these bent spatulas that make it easier to spread the icing without getting your fingers in the icing. Definitely can use this, thanks for sharing.  I was wondering how you made the gelatin mold?

Snail, does your jello prop need to wobble? Is it going to be biggish or smallish? And are you looking at having a mouth to talk? Just wondering as that might affect how you go about it. I have a gelatine mold making tutorial on my youtube channel.... you may even be able to make your jello prop out of jello. I use glycerine instead of water and so it keeps really well. silicone does not wobble much, but jello does and it can be quite tough.

OOOooo I would like wobble but had not thought of the mouth, that would be cool too.  I was thinking about the size of one of those jello cups but in the shape of curvy jellow mold, the puppet is a smallhand size head, but I wanted it big enough for the audience to see it and recognize it is jello. I am not doing that puppet any more but I know someone else who uses the same puppet and jello stories, she would love this. I am going to look for your gelatin tutorial, is there anything you don't have one for?

I thought silicone sticks to silicon. Wouldn't that make it tough to use as a mold for itself?

I think that if you "paint" with soapy water the mold before adding the silicone, the soap will avoid the two sillicones to stick one the other. Soapy water is what the seller recommends you to avoid the silicone to stick to your fingers if you use them for smoothing  a silicone surface for the intended use in DIY works. I have no ever tried silicone molding, but I think it should work, since silicone does not stick to wet surfaces

I had a message on youtube from a Gal in Poland who used the tutorial above, to build a costume head for a Cosplay event. She was invited to Japan and her group won, and creation won first place. I feel honored to have helped inspire. She sent me a link to her creation. She did the  big granny.
. She has posted some photos on her facebook page if you would like to see how she made it.https://www.facebook.com/LolaCosplayHell

In regards to using silicone for moulding silicone you can use a spray which stops the silicone from adhering to the cast silicone. This same method can be used to stop 2 part silicone moulds sticking to the other half. The product I use is made by stoner A324 and is a silicone/silicone release. There is also a silicone diluent you can use with most silicone (not sure with the cuaking silicone) that can be used in proportion of no more than 10% in order not to loose the silicon properties.

the dilutant....is it easy to come by? I know there are some really  great silicone products (check out  youtube brickintheyard vids) but we can't get them down here

the dilutant....is it easy to come by? I know there are some really  great silicone products (check out  youtube brickintheyard vids) but we can't get them down here

I get all my silicone and pretty much all things I need for moulding and casting from http://www.amcsupplies.com.au/index.php?main_page=index&cPath=23 they have this dilutant. There is an equivalent supplier in melb if that is closer to you. http://www.dalchem.com.au/ I have bought some items of these guys too. Not sure if they stock the dilutant though. Hope this helps you   

Pretty cool head she made.  I think maybe your videos touch and help more folks then you ever hear about.

I was looking at what one diluent was made of, d-Limolene.  I belive this is the citrus flavoring in sprite, 7up type drinks, it is a flavoring.  I always look at the MSDS the Material Safety Data Sheets that give you lots of information about the chemicals and effects they might have on people and handling info. Sometimes in high concentration the warnings are scary but when it is a very dilute solution then it could be edible.  Like water, essential for life but too much of it and you drown. The MSDS for a product will tell you how concentrated the chemicals are.  Acetic acid in very dilute solution is vinegar but the concentrated form is a very strong acid you don't want to breath, think we used to dissolve bones with the concentrated stuff.  when in doubt use gloves.