how to prep metal for painting

[coorsman]

I just welded up a frame for a table, I grinded the welds down flush with the suface, but when I paint it u can see my grind marks. What is the best way to hide all the grind marks? Is there a filler I could use?

Thanks Coorsman

[polishinginc]

You could use bondo and sand it smooth with 1000 grit and then 1500 or you could sand it with 400 grit "wet" and 1000 and then 1500.

[tomg552001]

they also sell a vented grinding wheel tahts tapered made for that kind of stuff. It dosnt gouge as much.