Ready-made ingot mold for Bruce B speed casting method?

[Jtarm]

I want to try Bruce B's speed casting technique, but I need an ingot mold of the right dimensions, and I'd like to find some without having to go custom with 1.5" angle iron.

Anyone know where I might find them? His are made from 1.5" angle iron 10.5" long. According to the article, they drop 3 lb ingots.

http://castboolits.gunloads.com/showthread.php?57105-BruceB-s-Speed-Casting-Method

[runfiverun]

he cut angle iron and welded it together.
there was someone here that was making and selling angle iron ingot molds some time back.
I just cut up a length of iron and welded my own gang mold together.
for the edges I used the same angle iron.
mine only hold about 1.5 lbs per ingot but the mold makes 8 at a time.
their biggest attribute is they stack tightly together