Tag Archives: Make-up FX

The How and Why of Silicone. (Part 2)

HOW TO CHOOSE YOUR SILICONE    

Ok, so you have your project ready, you are off to go buy some silicone and dive right in….  Whoa!  Slow down, tiger….. There is a whole bunch of stuff you need to know first.

What are you doing?  Is it a big piece, a small piece? Are you making a mould or a cast?  Do you need to make a box mould, a brush-up mould, a matrix mould, a pour mould?  How much are you going to need to fill it?  Do you want a solid coloured, or translucent  silicone? Are you in a hurry or is time not an issue?  Will you need a long or short Potlife?  What sort of Viscosity is required? What Shore Hardness do you require in your finished piece? Do you need to worry about Elongation/Tear Strength/Tensile Strength?

Yeah, working with silicones is a bit like  doing high school chemistry all over again, but trust me, if you understand the basics, it will save you a lot of time, money and frustration.

Lets start with the Product Description. 

When you are searching a website for silicon moulding rubbers, you will usually find somewhere a link to a.pdf saying “Technical Data Sheet”, “Product Overview”, or the like.  In a catalogue there may be aTable giving comparisons between the products on offer.

Note that the information I am discussing here is NOT on the MSDS… (the what? I hear you say? It stands for the ‘Material Safety Data Sheet’- a topic for another time…).  

A Technical Data sheet will give you all of the relevant information you need about a product. Lets go through one step by step, just to give an example.

At the top there will normally be a Product Description.  This will describe the general characteristics of the particular silicone, its category and type, and an idea of its texture, hardness, mix ratio and suggested applications.

Here are a couple of examples I randomly pulled out of my file (you should always keep this info for future reference): Continue reading

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The How and Why of Silicone. (Part 1)

Understanding Silicones: The uses of silicon in FX; Tin vs Platinum; Behaviours and Applications.

First point, for anyone who isnt sure, Silicone, the synthetic polymer, is correctly spelt with an ‘e’ on the end, to distinguish it from the metalloid element, Silicon. Technically, it is a misnomer anyway, that dates from their discovery in 1942, it was thought the structure of the compounds was similar to ketones, when they are in fact Siloxanes. However the name Silicone has become accepted and persists to this day.

Right, that’s out of the way, now to business…..

What is Silicone?

Here is the Wikipedia definition: http://en.wikipedia.org/wiki/Silicone
The Encyclopaedia Brittanica explanation: http://www.britannica.com/EBchecked/topic/544410/silicone

and for the real chemistry nuts, Dow Cornings spiel: http://www.dowcorning.com/content/discover/discoverchem/properties.aspx

Does any of that help? Well, maybe, but it wont necessarily help you make that mould/art piece/prosthetic or the like….

Basically, silicone, for our purposes, is a synthetic polymer, which sets, or vulcanizes, at room temperature, into a rubbery material. This is known as RTV Silcone. It comes in hard and soft formulations, is inert once cured, heat resistant, flexible (even in hard kinds) and very very useful! RTV silicone rubber is used in the movie, entertainment and special effects industry, and in theme parks. Soft “skin” silicone rubbers, used by make-up and Fx artists, were developed specifically for sfx makeup artists, and certain kinds are also used in the medical prosthetics industry. It is also used, in an uncured form, as a lubricant, which will be apparent to anyone who has ever spilt uncured silicone on their floor…. it is an immediate shortcut to the kind of slide action Tom Cruise was famous for in ‘Risky Business’…..

So how do you know what kind of silicone to use? That depends on what you are using it for…. First I will go through some basic information that everyone should know before they start. Continue reading


A New Era in Perth Filmmaking.

From the Archives:  This was originally published as a Facebook Note in late 2009.

Filmmaking is about creative collaboration and co-operation.

When you see the ongoing success of events like the ‘Perth Film Network’ networking functions you realise how much we are all benefiting, getting to know and work with the rest of the people in our fledgling industry. It’s great to see people responding so enthusiastically to these events. It makes you realise what has been missing for so long in this town- communication. It’s fantastic to have that chance to meet people, have a few drinks and and dream up new ideas for future projects.

But we won’t ever catch up to the rest of the country unless we all pull together, put in some serious effort, and make it happen…. or else we will keep on having drinks and having a good time, and life will go on pretty much as it always has round here. Which is fine if you want to keep working for nothing, or are happy getting paid two-thirds of what the rest of the country gets because ‘it’s only WA’. It’s fine if you don’t care that many of our crew never get much past the skill level of your average keen student filmmaker, not from want of trying, but purely because they never, ever, get a chance to work with someone better than they are and see how it can, and should be done.

There haven’t been enough professional level production here to have any sort of useful mentoring of our brightest and best, and people complain that the big productions that come over don’t use many local crew. Why is this so? Two extremely valid reasons- firstly, because we have a very, very small group of people trained to the standard they need, and most of those work full-time to service the small industry we do have- local commercials, corporates, docos, sport, and once in a blue moon, a kids tv series. Second reason is because most of the interstate and overseas productions don’t know a soul in the industry here, and even if they did want to hire local crew- they wouldn’t know where to find them. Basically we are really bad at promoting ourselves outside our own backyard. And not so hot within it, for that matter.

Is it any wonder that anyone with any ambition gets on a plane as soon as they can? If the people who do have the knowledge can’t or won’t teach you, how can you learn? Worse, if there is no-one here with the kind of skills you need to learn, what else are people supposed to do? How many of you want to spend the next twenty years making the same kind of films they have done here for the last twenty? Sure, the advances in computing and digital technology now make it possible for anyone to get a little camera and make a film, complete with CGI, in their living room. Well, heads-up, folks- just because you can physically make a film, it doesn’t automatically follow that its going to be good! This is an artform and a craft – one that requires dedication and passion, and most of all, practise! And by the way, practise doesn’t mean doing the same thing, the same way, over and over and over- it means refining and improving and learning. Continue reading


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