Rust removal help needed?

[jurelometer]

It looks to me like transferred rust from whatever object was placed on top and not necessarily rust on the table top. And I  don't think that we have established:

A) what type of metal

B) whether it has been painted or coated with something

The de-rusting process will vary depending on the metal and any surface finish, and whether PJ is dealing with actual rusting steel, or a stain from a rusting steel object left on top.

For example, if the surface is painted or coated, the rust stains could be superficial from whatever rusting object was left on top of it. Strong acid or solvent based products will damage the paint.  In this case, aren't you supposed to use PH neutral product?

-J