You asked for it, and I've finally finished Part 1 of the mask making tutorial! It may count as more of an overview, since I don't go into a ton of detail, but it would be an absolute book if I did - even still it's going to be a very long tutorial, as you can see.

This is phase A of part one.

Description of steps:

1.) I start with a model in wax based plasteline. This model is done over a full head cast, but it could also be done over a face cast or any other form.

2.) I build up a rim around the sculpture, to create a retaining ledge for the silicone.

3.) Bits of clay to add support to the ledge.

4.) The head cast is laid flat and leveled. I am using a tin-cure silicone* to make the mold. Both parts of the liquid rubber are measured into mixing cups, along with a thickening agent to make brush-on easier**.

5.) The two parts are thoroughly mixed together, and then brushed onto the model. After layer one has cured mostly, I add a second layer of rubber.

6.) I quickly cast two rectangular pieces in the same silicone, which I will cut up and use to make keys***

7.) I add a third layer of rubber, and stick the key pieces onto the curing surface. They will permanantly fuse to the rubber as it finishes curing.

8.) Once layer three has cured, I brush on a fourth and final layer. When that layer is cured, I draw a parting line down the middle, to use as a guideline for making the mothermold.

TO BE CONTINUED...
Phase 1-B - [link] Phase 1-C - [link]

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* This is not typically the rubber of choice for a brush-on mold, and this rubber in particular is formulated to be poured. Also, it has a short library life in relation to a platinum-cure silicone, and is prone to tearing. However, it's a much cheaper sort of rubber than a platinum silicone, and I get the brush-on to work fine for me. Also, a high mold-turnover rate is almost ideal for me, since I tend to update these molds often, anyway. But in general I recommend platinum cure silicones.

** Although this thickening agent, in the case of the particular silicone I am using, more accelerates the cure speed than actually thickens the rubber outright. It works for me.

*** This is totally my own freaky way of doing keys. I have never heard of anyone else keying like this, and that's because it's just silly. However, it's fast and cheap, so I'm doing it, so there.


To learn more about the materials I'm using, and to learn more about mold making and casting basics, visit Smooth-On.com: [link]