Home bluing
Posted: Fri Dec 25, 2009 9:38 pm
I need to apply a finish to a small number of parts and I'd like to try my hand at bluing them. (I know it doesn't provide much rust resistance, and better coatings are available). Small kits are available (cold bluing) and apparently the finish acquired from this is little more than paint-like. Larger kits are available for several hundred dollars (hot bluing).
After some searching around apparently the chemicals used in the process of hot bluing are fairly simple; potassium nitrate and sodium hydroxide as examples, with boiling water.
Does anyone have experience with a mix like this? Or what a good starting mix is to blue small parts (I'll probably just use a tupperware container to do it in).
I'll try the NaOH/KNO3 soon and let you guys know. Thanks
After some searching around apparently the chemicals used in the process of hot bluing are fairly simple; potassium nitrate and sodium hydroxide as examples, with boiling water.
Does anyone have experience with a mix like this? Or what a good starting mix is to blue small parts (I'll probably just use a tupperware container to do it in).
I'll try the NaOH/KNO3 soon and let you guys know. Thanks