In this part2 we see how we can make a jig for holding the clamp,
to grind the edges so to be sharp,
and lay exactly tight at the whole length of the sheet metal at the bed.
You can use your welding table or a channel iron or any flat and stable metal surface as base for your jig.
This grinding needs patience,
so if you think that you haven't enough,
ask from a friend to do it for you.
Good Luck if you decide to try it.