Sculpting and moulding a wound

Today it was my first time sculpting! Not in general of course. I got the chance to sculpt a wound, a glass shard wound to be specific. 

First thing I did was I sculpted my wound using all the wooden tools. The wound was placed on a plastic tray. 

*it is very important to wear a face mask while doing the next step!*

First, you need to spray your wound with the fixing spray. *Don't make it wet or shiny!*

After about 5 minutes, spray the wound with petrolease which will help to take out the silicone mould. Then, in order to create a silicone base for the wound you need to cut a cup in half. Place it on the plastic tray with the wound in the middle. The cup needs to be glued to the tray using a glue gun as it is more precise. 

**It is also very important to wear gloves while moulding a wound!!

There are two types of silicone. A and B, and it is vital to remember that those two products cannot be contaminated as it will be not possible to use them again if that is the case. It is important to remember to use different sticks (I have marked mine A+B). Also, if you take the clear lid out of the product, it helps if you put it inside the bigger lid as it stops it from dripping!

Next, what you need to make sure is that your scales are on 0gm with the cup on top. The amount of each silicone is dependent on the hight/size of your sculpture. In my case it was 50:50, ratio is 1:1. This means there has to be the exact same amount of each silicone in the cup. It is very important to remember to use a different pair of gloves each time to use a different silicone. Next, you have to mix the two silicones together and pour it onto your sculpture. It will take a while for the silicone to dry, at least an hour. 

*tap the cup on a table to remove air bubbles!

Once the mould is all set, make sure you clean it with alcohol in order to make sure there's no clay cleft or any sort of fingerprints, etc. Next spray the mould with petrolease then pour the mixture into the mould in order to create the first layer. You can use a hairdryer to make this process quicker. Then mix super boulders in proportion 1:2 with alcohol. Make sure you mix it well in order to get the right consistency. 

*never put any of these products down the sink!!*

Next you need to measure 8gr of silicone B and 8gr of silicone A = 16gr. Then you need to add 75% of 16gr of deadener, which would be about 12 gr. After that you need to add pigment to the mixture in order for it to match your model. After you've poured the mixture into your mould, smooth the area with either a ruler or a metal mixing palette.

After that your wound will be ready to use!