ORIGINAL: haikt
I watched your builds on rcgroups very cool items.
I have a cnc cutter at home so if you need anything cut let me know.
I have couple more questions before I go into making the mold.
1. when you paint the tooling coat and wait until tacky i assume you mix new batch for the next coats or heating the epoxy make it setup faster maybe?
2.when you say spray flowing coat of PVA what is this mean and how many coats do you spray.
thank you
Each coat of surface coat is a new batch. I often use a fast hardener for the surface coats.
A flowing coat of PVA is one in which all the atomized droplets come together and form a smooth, flat, glossy finish. When a flowing coat first gets sprayed on it will look milky. As it sits, the little air bubbles will escape and it will look clear. Typically an airbrush does a pour job of spraying a nice smooth finish because the nozzle is too small to let enough product out of the gun. I like to spray with a 1.4 mm tip.
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