Quote Originally Posted by Jimbo45 View Post
Bump for any new info on this subject.

Just what is the difference between a "forged" extension, and an "extruded" one (assuming both are of 7075 material) ? I would guess, using the terms loosely, the two processes might not be all that different, depending on the variations of each process. Anyone have any new information on this topic?
Forged - the metal is "hammered" into it's shape and a good forger can control how the grains in the metal move, this can mean a very strong part.

Extruded - metal is pushed through a hole (think Play Doh) and the grains in the metal stay uniform and in the same direction, like in a piece of wood.

Someone who knows a lot more about metallurgy will probably expand on that...