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Moldmaking D.I.Y silicone mold, I'm going to give it a try!

Feb 2, 2017

    1. Ok, I am going to use this method of using a DIY silicone mold....

      Here's my prep!
      head to be molded and the Sillicone.

      The directions is pretty straight forwards. First of all Sealing the head with a few light coats sealent.

      [​IMG]


      (( will be posting more as I go along.))
       
    2. and after placing the silicone on the head.

      I used two tubes of the silicone in the post above for this, I am hope that it would be firm enough to hold the shape and let flexable to get my orginal/cast out.
      Time to wait over night until it dries.

      [​IMG]
       
    3. The Next Day:

      Yay! So far so good!

      The silicone dried very firmly, but has enough give so that it would be possible to pull my original out without taring. (I hope)
      I trimmed around the edges and silly me, I had forgetting to place any keys around the edges. And so I used a bit more silicone to create a very big "lip" around the edges so that hopefully, it will fit back in proper place snugly.
      ( I wrapped it in saran wrap and tied it with shore laces to keep the silicone from drooping down.... it looks like acupcake or a mushroom.)
      Time to wait another over night.

      Things to note: when I had trimmed off pieces of the mold, I notices that there are very fine bubbles within the silicone. While this doesn't bother me at all.
      I would say that this method would not work for pulling final castings.

      Since this experimental, I am hoping to pull a junk cast to work on resin bubbles would not bother me since my sculpt would need to be farther refined anyways.

      [​IMG]

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    4. good luck! i would be so scared to try this with any sculpts that might pull apart taking them out... rrr!
      good luck and more good luck!
       
    5. The silicone dried and I pulled out my original with no problems or damages. I took it very slow and careful-like.
      The mold ended just how I had hoped. Firm yet just enough flex.

      The photos where taken the night before and I am in the process of hand roto-casting the ears and nose/mouth area. Since I am trying to avoid resin bubbles during casting. Once that dries I will be mixing more resin and leaving it to cure for a few days.

      The resin I am using is "Easy cast" clear, However it's probably very old more then 3 years old? Does two part resin when unmixed expire? anyways, still trying it out since I can't really afford to buy fresher supplies until next month.

      I had poured some water into the mold after making sure that it was closed firmly. Then measured that liquid.
      It will take my head between 60ml - 65ml of resin.

      [​IMG]

      [​IMG]
       
    6. Ok, The resin is poured and is sitting in an out of the way place to cure. I won't be opening it until Tuesday evening to make sure that it's enough time for the resin to set.

      See you until then.
       
    7. And here is the result of my first casting:

      Sticky! First castings are never perfect. :XD

      For some reason the resin's surface was very sticky. At first I thought it was the impromptu release agent I used. (Vicks vaporub) but when I checked the castings that I had made using my rubber latex mold with a hard ridged support, they came out so perfect! (I had even used my cheapy release agent.)
      It might be the type of silicone that I am using or something else entirely.

      Even with the non-success of my first casting I am very happy with my discoveries. :))
      The first casting ended up not being usable ,but I now have a bit more funds to buy more silicone. This time I am going to try a layer of rubber latex then a layer of silicone.
      And perhaps do this with more care and thought. (like putting the keys in top of the mold and a proper pouring gate.)

      [​IMG]

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      Attached Files:

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    8. sad that it didn't turn out. but yay for knowledge! on to the next try!

      XD and i love that the castings are full of glitter.
       
    9. I am trying one more time since I can't afford any more silicone anyways, so I used up the last of my resin to make one more cast in the silicone mold.

      I really loved how the glitter looked like. Since I am thinking of making eyes again I was experimenting.
      (The resin I used was old and very yellow.)

      If I can get more funds somewhere, I will be trying again if this next one doesn't turn out.
      need more silicone and resin.
       
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