[TR] rust removers recommendations

[Dave1massey at cs.com]

In a message dated 6/13/2011 12:53:04 PM Central Daylight Time, 
TR3driver at ca.rr.com writes: 
> What's wrong with a coating of iron phosphate?  I thought it was supposed 
> to
> be a Good Thing, as it helps inhibit future rust and also helps paint
> adhere.  For example, phosphoric acid is the main ingredient in DX579 
> Metal
> Prep, which is used to etch the surface just before applying primer.
> 

Depends on the application.  No worries of you are going to paint.  If you 
are going to powder coat, maybe not.  If you are going to zinc plate, that's 
a real issue.  If it is a machine part (as opposed to a fender) I don't 
think you would want iron phosphate in the gearbox.

Dave