Philco 123 Color TV Found On Craigslist

[Olorin67]

for real intricate detail, something called "investment casting" is used. sand casting tends to be a bit rough. If you don't need it to actually be metal, you can use rubber molds from an original,, you can get great detail that way

[Phil Nelson]

Originally Posted by Olorin67

If you don't need it to actually be metal, you can use rubber molds from an original,, you can get great detail that way

You can make very realistic repros of metal parts by mixing metal powder with casting resin. The Smooth-on company calls this "metal cold casting:"

http://www.smooth-on.com/search.php?q=metal+powder

A guy made repro knobs for my Colonial Globe radio using that process. They look and feel just like the cast metal originals -- even in heft.

I haven't made metal-powder resin repro parts, but I have made repros using ordinary resin and it is not terribly difficult.

Phil Nelson
Phil's Old Radios
http://antiqueradio.org/index.html