Originally Posted By: Drew Hause

And BTW; a gunsmith who requests anonymity has had lots of experience with Magnaflux and penetrating dye testing of pattern welded barrels and believe the process to be quite useful in evaluating the integrity of the metal.



Drew, my father retired from John Deere many years ago. One of his jobs (for a fairly brief period of time--apparently reaction to chemicals involved in the process) was running a Magnaflux machine, checking the integrity of various tractor parts.