Parkerizing Receipe Solution

[bigduke6]

Have a look at this, maybe what your looking for.

DIY parkerizing solution - Nevada Shooters

[Chuckindenver]

I once accidentally achieved a grey "parkerized" look on a thread-cutting die that I put into a cup of "rust remover" (which is actually weak phosphoric acid) and forgetting it for several days.
Zinc phosphate is available as a primer for painting on brass. Manganese phosphate is also used as primer for brass/steel.

Most of the materials we need are available by the bucketful as industrial products for painters, furniture restorers, car body repairers, artists etc. A lot of chemicals may even be available from a dispensing chemist, if he knows you as a responsible person.

Why pay someone a high price just to mix these together and sell it to you in a tiny little bottle as "specially for guns". The mix may be, the raw materials are not. Find out the ingredients you need, and try the sources for the above-named activities. Experiment with old bits of iron and steel until you are happy with the results. Just don't forget the items in the bucket - like I did! You should not need to import anything.

Patrick

that might work in Germany...but the EPA has a tight grip on who can carry, and sell such things here in the ol USA...trust me,...iv looked for a place that will sell me the things to make my own... no such luck...i have access to some of the nasty things used in black oxide, and make my own blue salts, only a select few companies can sell and carry Zinc, and Manganese phosphate..
theres a little more to it then just adding acid , water, and manganese.. you have to have the PH balance right to get the right mix, and color... iv been coating steel for years....and have done my homework.. the company that i buy from, has a chemist that helps me with mix and color issue..man is a wiz at this...
for a small job, you can likely contact eastwoods car restoration supply company, and get a small amount of manganese phosphate for less then 50.00

[OlManDow]

I dabbled in this a few years back when my first supplier went out of business, and gave up. I did find that the commercial solutions use some catalysts, notably nickel acetate, which is expensive and a bit hard to find. You wont' get good color and fine grain without the catalysts, which aren't mentioned in most of the references. There are periodic shortages of GOOD parkerizing solution here when the military goes on a buying binge - the chemical suppliers cut back on the nickel acetate, and the chemicals won't produce good finishes. If you can obtain commercial stuff, it is worth the hassle. We use Dulite - don't know if they export.

OlManDow

[muffett.2008]

You need a bath of : Phosphoric acid..........4.2g
Manganese dioxide.......2.5g
Distilled water...........1 litre
Cast iron fileings can be used instead of the manganese, boil for half to one and a half hours, must be kept boiling briskly. Allow to cool then rinse residue off, should be a slightly rough dark finish.
To parkerise use Phophoric acid......25.0g
Manganese dioxide..1.5g
Distilled water......1 litre
Boil in this mix for 2 to 4 hours, rinse in cold, then boiling water, allow a few seconds for water to evaporate then dip into linseed oil, drain and dry.
These mixes are for small parts, increase proportionately for large items, and remember, do not let the mixture boil away to more than one third, otherwise........