SiobhanCapps366
出典: くみこみックス
Before we begin this project let me warn you that it is a messy business enterprise. It is best to have some rubber gloves, a couple of tubes of clear silicone caulking compound, (do not get the odorless sort) some Xylene, (this can be for cleanup so get a pint or so) a can of paste wax, a smaller bottle of glycerin, and some acrylic silicone caulking .
It is best to be capable of get glycerin at a pharmacy; you only require slightly so get the smallest bottle you can.
Crafters acrylic paint is in any craft shop; once again you'll want to get the smallest bottle. Any color you like is great. The rest with the stuff ought to be at your neighborhood developing provide.
When you have tried to make use of silicone for molds prior to you almost certainly noticed that there are actually a few issues.
1 - It's a little thick and therefore difficult to spread evenly.
two - It doesn't cure evenly
3 - It sticks towards the Master like glue! I guess that is certainly why it's occasionally applied for glue?
I will show you tips on how to overcome these troubles within this tiny essay.
The very first thing you do is get the Master ready. He would like a good coat of that silicone caulking . Place it all over him and smooth and buff him till the surface is good and shiny. I told you this was a great deal of operate!
Take as significantly silicone as you feel you will need to cover your Master and put it inside a plastic bowl. The bowl really should be significant sufficient to let you stir the silicone.
A tube of silicone is about ten ounces so you can get a rough thought of how much you have within the bowl by estimating how much you might have taken from the tube. For every single ounce of silicone add five drops of glycerin plus a drop of paint. Mix these with each other and add them to the silicone. Go quick with this and only use minimal amounts. The additional you use the weaker the silicone gets. Stir this until you might have a uniform color. That is certainly why you added the paint, without it it is is difficult to tell when you have the glycerin fully mixed. You are applying clear silicone so you may see if you have any air bubbles trapped inside your initial coat. You do not want any, so attempt to get it mixed as smooth and even as you could. Do not stir any far more than you have to, stirring can develop air bubbles.
You now have between 15 and 45 minutes to spread this over your Master. I use a soft plastic spatula about 1 inch wide. This appears a bit small bit it tends to make it simple to maintain the silicone coating even. Make the first coat thin, about 1/8". It truly is essentially the most critical coat. This can be the one that holds the facts. The operating time depends on temperature and humidity. If it can be hot and warm you might have 15 minutes! Within a cool, dry place you'll have 45 minutes or additional. You may want to attempt spreading this on some throw away masters prior to you try to do your initial "real" mold. You need to get a good, even coat on the first time. I can't strain this sufficient. If the initial coat is no superior you might as well start out over.
It really should be cured in about three hours. I wait a couple of hours just before I start out with my 2nd, 3rd, etc coats. These could be thicker and you don't require to be concerned about any air pockets. I do not mean that you just can have large air holes within the silicone, but small ones aren't a significant concern. You'll need to build up to at the least ¾ or extra inches of thickness. Make sure to fill any undercuts on the outside of one's rubber mold.
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