[blkfocus4180]

im in the process of porting the intake manifold and was wondering what finish of sand paper do i need to go down to . and how perfect does it have to be finished..i started with a 80 grit

 

[blkfocus4180]

alright thanks i went up to 300

 

[FocusOnMyZeTec]

dremel.

 

[focusbot]

the smoother the better...I usually make it feel like a nice firm....