Roy,

Good info!

Just a caveat regarding aluminum wheel rims:

Most of them ARE cast and make good raw casting material.

However, a few are machined from rolled or forged blanks, and these are
less suitable.

Mercedes Benz rims are forged, I believe.

As to the earlier query where to find cast alu auto stuff: try auto
scrap yards. Also auto repair shops specializing in cylinder head or
transmission repair work.

Remember to only pay the scrap metal value for the items!

Regards,

Wolfgang