5
5. Plaster-filled mold.
6
6. Completed plaster casting. The tiny bubbles seen
are in the plaster pour, and not in the mold.
Mini-mold boxes
I find that for smaller detail parts, a paper hot-cup makes an
excellent mold box. An O scale barrel and crate that I want to
reproduce fit into a mold box (7) consisting of a paper cup cut
down to allow me to glue the masters to the bottom.
The masters are stuck to the bottom of the cup with hot glue
(8). The assembly will be sprayed with cooking spray before the
polymer is poured.
Melting and pouring the ComposiMold proceeds as before.
Bubbles near the surface of the filled mold box (9) do not affect
the detail of the mold.
The paper cup is simply torn away (10) to release the mold.
7
7. The mold box for an O scale barrel and crate
consists of a cut-down paper cup.
Easiest way to make molds - 5
MRH-Jan 2014
