What type of media to use?

[Tito]

Hey I was wondering if you guys could help me out! I want to polish an intake manifold and valve cover for my car. However the intake manifold is very rough. I was told I could use glass media and sand blast it smooth. I was wondering what type of media to use. , I know Caswell sells different grit of glass media but what grit do I need? It would be great if someone could do a faq on the media that Caswell sells describing the different media and grit, and what it will do to different surfaces.
Thanks for all of your help!
Tito

Originally Posted by Tito

Hey I was wondering if you guys could help me out! I want to polish an intake manifold and valve cover for my car. However the intake manifold is very rough. I was told I could use glass media and sand blast it smooth. I was wondering what type of media to use. , I know Caswell sells different grit of glass media but what grit do I need? It would be great if someone could do a faq on the media that Caswell sells describing the different media and grit, and what it will do to different surfaces.
Thanks for all of your help!
Tito

there is some thing like that in one of these post ... if you use the search at the top of the screen you may be able to find it ... glass bead dose give a nice cut ... i use a scat mixture .. if i don't want to sand that much i will use poly or walnut shell