Help With Silicone Molds

Decorating By Mrs glowworm Updated 21 Jul 2015 , 9:40am by belindaven

Mrs glowworm Posted 4 Jan 2013 , 4:02pm
post #1 of 17

Hi all! :)


I would like to experiment with making my own molds for sugar paste relief work.


 I have searched the internet for alternatives for food grade silicone and could only get

one thread where someone suggested using marine aquarium silicone since it is food safe (I would

have to double check this before I consider baking a cake commercially!). 


I have also read on this forum that people suggested using Gum paste instead of the silicone. But I understand that the mold might not be able to be used multiple times?


I want to know if other members have tried their own versions of "silicone molding" with alternative mediums and what was your experience?


(If there is anyone who can point me in the right direction in South Africa (Gauteng) as to where I can at least find food safe silicone putty I would be grateful!  The international shipping seems quite steep...)

16 replies
-K8memphis Posted 4 Jan 2013 , 6:01pm
post #2 of 17

try to get something from your local dentist



Mrs glowworm Posted 4 Jan 2013 , 6:15pm
post #3 of 17

mmmm.....K8memphis, I think it might be time for my check up at the dentist! Brilliant.

shanter Posted 4 Jan 2013 , 7:16pm
post #4 of 17

I don't know if it is available in South Africa, but try to find Amazing Mold Putty. It is easy to use and is food safe.

costumeczar Posted 4 Jan 2013 , 8:13pm
post #5 of 17
Originally Posted by shanter 

I don't know if it is available in South Africa, but try to find Amazing Mold Putty. It is easy to use and is food safe.

This is what I use to make molds. You can buy it from the website if you can't get it in a store where you are.

SunnySide Posted 20 Jun 2013 , 1:27pm
post #6 of 17

Mrs Glowworm, did you manage to get something??
Im also based in Gauteng and im also looking for it.


I googled dental Putty, but setting time is 1 to 1.5 minutes, which is not long.

tammyvv Posted 9 Sep 2014 , 3:41pm
post #7 of 17

ADid you guys came right with the silicone molds I would like to make some I also live in gauteng

LisaBerczel Posted 10 Sep 2014 , 1:25am
post #8 of 17

You can use gelatin to make molds if your casting with gum paste.


Hollywood has been using gelatin for quick molds and prototyping as well as casting pieces for special effects makeup for decades.


The trick is to use very high bloom gelatin and as little water as possible.


Special effects link:



(Water content is what causes gelatin and alginate molds to shrink as they dry.) (PS - Alginate is fragile and has a high moisture content so may not work for master molds.)

cakesbykarenk Posted 14 Jul 2015 , 1:10pm
post #9 of 17

Hi All from Gauteng

 I have been using magic moulding gel from the cake shop to make moulds, it is a gelatine based product. It works fairly well, but not recommended for very detailed work, and it doesn't last long. On the plus side, you can melt it down and use it again. Otherwise, if you are like me and want the mould for ever and ever (!), go to bid or buy or wantitall, both are selling silicone putty now. DON"T try the marine silicone, I did, I was totally desperate, and it was messy, messy! And took around a week to dry, and only limited success, etc. Not worth it....


ChefKitty Posted 14 Jul 2015 , 4:58pm
post #10 of 17

Hi, there! I've been using gelatine molds for chocolate and fondant recently. I used it for the rock toppers on these cupcakes: 


Check the link for tutorial.

The material has to be stored in the refrigerator or freezer, but it works very well, is reusable, and is very inexpensive.

cakesbykarenk Posted 15 Jul 2015 , 6:01am
post #11 of 17

Brilliant, ChefKitty, just brilliant! I am definitely going to be giving this a go, moulds are terribly expensive in South Africa, so any way to bring costs down are welcomed:). And, FYI, your rocks look fantastic, very realistic! Thank you for your assistance, we all appreciate it!

ChefKitty Posted 15 Jul 2015 , 3:06pm
post #12 of 17

Thanks, Karen! I'm glad you've found it useful. ;-)

belindaven Posted 20 Jul 2015 , 7:33am
post #13 of 17

Hi Where can I buy corn syrup please?



cakesbykarenk Posted 20 Jul 2015 , 7:57am
post #14 of 17

Hi Belinda, don't let the name be a pain like it was for me! I also struggled to find the stuff, and the shops were all going "you want what!?". Here it is called liquid glucose, and just about every baking supply shop sells it. I have also heard that you can get it at some pharmacies, but obviously not at the ones I buy at! Not sure what area you are situated in, but if in jhb, there's a shop in Edenvale called The Chocolate Den, they have it. In Boksburg, there's a shop called Baker's Bin that sells it too. Hope that helps!

ChefKitty Posted 20 Jul 2015 , 3:24pm
post #15 of 17

I always forget that corn syrup isn't called that anywhere outside N. America. I've updated my blog post to include it's alternate name. Sorry about that!

Mrs glowworm Posted 20 Jul 2015 , 5:24pm
post #16 of 17

Thank you so much for all the info!!  ChefKitty thank you for the detailed instructions.  Can't wait to give it a try!

belindaven Posted 21 Jul 2015 , 9:40am
post #17 of 17

Thank you so much.  I really appreciate all the help.

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