Rep Power: 922

The only person that will prolly be able to help me is Arch or maybe jessasaurus, but how do you tell the difference between a cast and steel forged crank? I know its somethign with like the shape of the one part. dont know how to describe it but like..here ill draw it

http://img118.exs.cx/my.php?loc=img1...e=crank7im.png

cant you tell by looking at that part and like its either smooth or has an edge or something?...thanks

 
Rep Power: 1125

forged won't have parting lines, I think that's a cat crank since forging doesn't do detail like that (that's what machining is for)

 
Rep Power: 922

so if its forged it should be smooth, and cast will have the edge. i knew it was something like that, but i couldnt remember. thanks

 
Rep Power: 1125

figure forged is under pressure cast is hot and into a form