Thanks, unclesyd.
You help me a lot!
The metal foil i need is SS 304L or 316L¡]VIM/VAR¡^
The surface roughness of these metal foil¡]strip¡^is very important to me¡I¡]Ra below about 0.2um, thinkness is about 0.0005"¡^
I want to know if any commerical product i can buy ? or i should get the near commerical product and rework it to achieve my speic.?¡]maybe polishing¡H¡^