Fire Bluing

drbuster · 02-28-2004, 08:50 PM

Would like to know the "formula" for fire or nitre bluing parts, such as seen on the front site, grip screws, toggle pins and even magazine pins. Randall Gibson on page 51 of his Krieghoff Parabellum, states that heating the part in a 550 degree oven for fifteen minutes gives the part a deep blue color. But is this the fire blue color? Would appreciate opinions from our expert refinishers.

02-28-2004, 08:50 PM	#1
drbuster User Join Date: Jun 2002 Location: San Mateo, California Posts: 1,432 Thanks: 2 Thanked 71 Times in 56 Posts	Fire Bluing Would like to know the "formula" for fire or nitre bluing parts, such as seen on the front site, grip screws, toggle pins and even magazine pins. Randall Gibson on page 51 of his Krieghoff Parabellum, states that heating the part in a 550 degree oven for fifteen minutes gives the part a deep blue color. But is this the fire blue color? Would appreciate opinions from our expert refinishers.