How to annodize.

[Magus]

 

[Magus]

And Parkerize.

 

[Tim Horton]

A number of years ago now, Birchwood Casey came out with an more sophisticated, larger size home bluing system to do more and bigger projects than could be done with home touch up cold blue.. All this still on a level useful to the occasional hobby user.. I have never read how well this worked, or not..
Anyone with experience ??