Saturday, December 24, 2011

75 Corvette--Aside--Foil Copy is Conquered!

Sometimes when I'm building I discover things--sometimes by accident. Those accidental discoveries are good things!

I was working on a 1:25 1975 Corvette build, using a couple of vintage Corvette from MPC,when I discovered the rocker covers are nothing like the 1:1 cars'.

Here's what MPC gives you.....

Here's the 1:1 engine (apologies to whoever posted this originally)

Besides not being chrome, the MPC mastered valve covers are nothing like the originals. I figured I'd modify them by casting them using Omurayu
to customize and "move things around"

Here's what I came up with....the casting is OK, and I could now sand it down and start moving around the filler cap and other items by cutting apart multiple castings. But right before I started I wondered--does CA stick to Omurayu? If not, I might be able to do something like the "foil copy" I have read about in hobby mags.

As I understand Foil Copy: you take a piece of tin foil and press it against a detail you want to keep, then fill the indentation in the foil with superglue. Let the CA glue dry, then remove the CA, trim, paint or whatever, and use on your kit.

I could never get this to work--the CA always came out like a little blob. I posted "how do you really do this?" on a couple of hobby forums and no one on the forums seemed to know either. Is foil copy some sort of myth?

Well, no. CA glue DOES NOT stick to Omurayu molds, and I made a PERFECT "foil copy" of the filler cap from it.

So here's how I did it: I cast the small item using Omurayu, poured in a dab of CA, let it dry a LONG time (for me, it took 24-48 hours), removed the dried CA from the mold using tweezers, trimmed, and painted. It works!

Here's the finished part and to give you an idea of the tiny size of the casting, the part vs. a guitar pick. This is like learning to use 2 part clear--for me, it will change a lot of things. And BTW, I will not use this tiny filler cap for the valve covers....the MPC 1980 Monte Carlo MPC-702, besides having a nifty little Honda Motorcycle included in the kit, has correct valve covers for a 75 Vette, and I will just steal them from that.

1 comment:

James said...

The reason the valve covers in the Corvette kit look different from the ones shown in the picture of the real engine, is the real engine is a small block engine (265-350), and the engine in the Corvette kit is a big block (427-454)
However I commend you for mastering the foil copy system..

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