The Ford Barn - View Single Post

Bob Bidonde · 01-09-2015, 12:10 PM

Bluing was commonly used to layout parts on sheet metal using a scratching awl and to check contact between rubbing surfaces.

01-09-2015, 12:10 PM	#18
Bob Bidonde Senior Member Join Date: May 2010 Location: Long Island, NY Posts: 4,110	Re: Prussian blue Bluing was commonly used to layout parts on sheet metal using a scratching awl and to check contact between rubbing surfaces. __________________ Bob Bidonde