Thread: clear casting epoxy scales

i had an idea.. since working with plastic is hard, and bakelite needs alot of equipment, i thought i would try to cast some scales with a casting epoxy resin. its clear, but transparent , and solid dye can be added. anyone ever try this? just got the epoxy from michaels. ill keep you guys posted once i get started. just looking for some input before i try this.

I've actually thought of working with this stuff myself (lots of cool applications possible) but haven't gotten any further than investigating local suppliers (what's best to use etc... ).
Keep us up to date !!

How do you plan on making the molds? How do you plan on making the casts release from the molds? This sounds very interesting.

Zacsdaddy

Originally Posted by Zacsdaddy

How do you plan on making the molds? How do you plan on making the casts release from the molds? This sounds very interesting.

Zacsdaddy

make a model in wood, sealing it with wax
and then casting it in silicones (there's varieties for that exact purpose)
using silicones should enable one to release the scales from the mold without too much trouble

There are a couple of members who do this,at least one is a real pro at it and has made hundreds.I'll let them chime in if they so wish,but thought I'd let you know it's not only possible,but done regularly.

Hard part will be bubbles. You have two ways to deal with them, a butane/propane torch or a vacuum. You can pass the torch over the mold and the bubbles will raise and pop but you do not want the flame to touch the resin. A vacuum chamber will draw out all the bubbles. You can also use a vibrating table to shake the deep bubbles to the surface.

Next problem, dust. One little speck of dust on the surface and you will have to sand them out with micromesh and buff them. You also have to make sure your mix is correct. A little to much resin or hardener and the epoxy will not set correctly. Dont forget about the heat. When resin cures, it is an exothermic chemical reaction and can generate uncomfortable levels of heat. The thicker the resin, the hotter it gets. It also takes a couple of days to cure.