2 Attachment(s)
Rust Bluing Chrome Moly...OR How to waste an entire day
Okay I'll admit it I'm somewhere between just stubborn as a mule or just plain stupid.
I have tried Radocy Rust Bluing on a variety of steel grades and have always had very good results on everything but CrMoly. Every time I've attempted a CrMoly the results were somewhere between Purple Mud and Blotch City.
But ever the optimist I decided to have one more go at a pile of HPA tubes. I tried absolutely every trick I know to get a decent colour and finish but as you can see.....
Attachment 947Attachment 948
IMHO Radocy does not produce satisfactory results on any 4130, 4140 (LW Barrels). You get results that are typical of oil contamination even with a 1 hour boil in detergent.
I've had good luck with Pilkingtons on CrMoly but the colour is very charcoal. Very even, uniform but lacks flash.