Creating a Silicone/Fiberglass Mould

2 Apr

STEP ONE – CREATING THE NEGATIVE

Step one was very similar to step two: once I has bedded in my hand, added the wall and then poured the silicone into the mould I allowed it to set. Once it has set I removed the clay walls and wiped down the silicone.

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I then added a gel layer, followed by the two fiberglass layers. We shall talk through these processes in Step Two.100_4701

STEP TWO – CREATING THE POSITIVE.

YOU WILL NEED

  • PPE
  • Gel Coat
  • Resin
  • Catalyst
  • Fiberglass strands
  • Small square fiberglass sheets
  • Covered board
  • Clay (to stabilise mould)
  • 2x Paper cups (plastic will melt)
  • 2x Wooden mixing sticks
  • 2x Disposable brushes

METHOD

  1. Remove hand and clay from inside the Fiberglass/Silicone Negative – use water to wet the clay. You may need to remove the Outer Fiberglass shell to enable the silicone to be peeled away from the hand. Clean out the silicone mould – then sturdy horizontally with clay pieces.
    100_4702100_4706100_4709
  2. Mix together the gel coat and catalyst, ensuring through mixing. Coat the silicone in this with a disposable brush, ensuring there are no bubbles being trapped in the mould. This should only be a coating, not a full layer. Make sue edges are neat and all areas are covered. Then add fiberglass stands to strengthen this and ensure the fiberglass mat fuses properly.100_4711
  3. We then add the first fiberglass matt layer. After an hour, once it has “gone green” we cut the excess away and apply our second fiberglass matt layer (as second image). Once this has dried, we have our fiberglass positive and we are ready to start sculpting!

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