Molding An African Wildcat Skull Part 6 – Creating The Upper Mold



In part six, the silicone is weighed, mixed, and poured into the mold box to cover the skull. My apologies for my arm covering the subject while pouring the Silicone! It was hard to look away to the view screen while pouring, lest I pour Silicone all over the place! LOL!

While the Silicone was setting up, a small bubble keeps finding its way to the surface of the rubber. Two ‘discoveries’ as to why this occurred have come to light. The first of which is, the skull was never sealed. (This is something that should have been done with this particular skull, and something that will become part of my regular routine when prepping a skull for this procedure.) The second concerns the heat source I put directly over the setting Silicone. I believe the added, concentrated heat, enhanced the ability of the skull to expel air from within, and allowed the Silicone to enter through some unsealed cracks in the bone. Lesson learned!

The important supplies used in these videos are listed below.

Protolina – Natural Plastalina Modeling Clay by Van Aken, is a sulfur-free oil base compound, available from B.I.T.Y. Mold Supply …
http://www.shop.brickintheyard.com/Protolina-Natural-Plastalina-Modeling-Clay-1lb-ProtolinaU1.htm

PlatSil 73-20 Precision Silicone by Polytek Development Corp., available from B.I.T.Y. Mold Supply …
http://www.shop.brickintheyard.com/PlatSil-73-20-Precision-Silicone-Pint-Kit-2-lb-Kit-7320U.htm

Pol-Ease 2500 – 13 Oz Spray Can by Polytek Development Corp., available from B.I.T.Y. Mold Supply …
http://www.shop.brickintheyard.com/Pol-Ease-2500-13-Oz-Spray-Can-2500.htm

Large modeling tool – Sculpture House No. 210, and other Sculpture House Modeling Tools, are available from Arizona Sculpture …
http://www.arizonasculpture.com/products.asp?catID=5&subcatID=33

Acacia Wood Tools 8″ — B Series, are available from Arizona Sculpture …
http://www.arizonasculpture.com/products.asp?catID=5&subcatID=34

Small modeling tool – Kemper W21 Combo Wire and Wood Tool, available through Big Ceramic Store …
http://www.bigceramicstore.com/kemper-5-combo-wire-and-wood-tool-w21.html

Other Kemper Wire Tools, also available through Big Ceramic Store …
http://www.bigceramicstore.com/tools-supplies/brands/kemper/wire-tools.html

Kemper wooden modeling tools, available through Big Ceramic Store …
http://www.bigceramicstore.com/tools-supplies/brands/kemper/modeling-tools.html

Smooth-Cast 305 Urethane Casting Resin, available from Smooth-On, Inc. …
http://www.smooth-on.com/shopping_cart.php?catdepth=1&sort=2a

Mannetron – Rotational Casting Machines …
http://www.mannetron.com/content.aspx?PID=45

Tech-Bond Solutions …
http://www.tech-bond.net/Tech-Bond_products.html

source
Africa Safari Animals Safari Africa at www.edmacsafaris.com