Fundamentals / are the main skill-areas required to build Beacon
Moldmaking is magic, in that it allows us to accurately copy a shape from one type of material and Cast (form) it into another. It also allows us to make multiples of a shape.
This process consists of three main elements:
1. The Positive - the form you want to replicate
2. The Mold - the material that ‘remembers’ the shape of the Positive
3. The Cast - the part that is made from the mold, usually from a liquid mixture that pours into the Mold and hardens over an amount of time.
Going over the components of Moldmaking.
The Positive is the original shape we’d like to replicate in a new material. In our case we’re using clay because it is easy to sculpt and to add details and textures.
Justin and Alante sculpting a clay Gem.
Johanna sculpting a crescent moon shape.
Kevin and Jae showing the sculpted Owls head and source image.
Then we make a Mold over the Positive. We encase the form with a watertight box, and then fill up the box and completely cover the Positive with a Mold material. We’re using a fast-setting Silicone material, which is rubbery and pliable when fully cured.
All mixed and poured... the clay object is covered completely by the Silicone rubber.
We then remove the clay form, and the empty space (the Positive) is left in the silicone mold. This Mold material is very rubbery and stretches to release both our Positive, and later to release our Cast part.
Holli and Lakeisha removing the clay positive from the Silicone rubber mold.
We then pour a Casting material into the silicone mold. The Casting material is composed of two different compounds (usually liquids) that when mixed together cause a reaction and harden to a solid form. We are Casting with a translucent plastic resin, and also adding in a waterproof LED strip! This will allow the light from the LED to emanate through the piece.
Greg, Rebecca (Beam staff), Day Day and Holli pouring the liquid resin into the mold. The LED strip is also loosely inside the mold, and will be set in place when the plastic resin is fully cured in about an hour.
Boom! The finished piece.