Friday, April 25, 2014

2 Stroke Prosthetic Bunny - the action figure - part 7

Phase 7: prototype wax cast (continuation of my March motor bunny post).

The molds i poured from the clay master were rather rough (this was expected, as it is my very first attempt at urethane rubber - and creating an action figure from scratch), the wax casts turned out a bit bumpy and pitted...

...however, the wax casting was surprisingly easy and fast to do (only took about 2hrs to cure solid for each segment and de-molded painlessly). It was important to maintain the melted down the ingredients (from the previous bunny post) at around 170F, to prevent bubbles from forming or cracking/tearing as the wax cures.

Once de-molded, each segment had to be sanded, scraped and carved to achieve a smooth finish (i got some really cool looking dentistry-like tools for that)...

next step: build and insert the linking joints...

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