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The one for black phosphate is a manganese solution. The one for the grey is a zinc solution. For small parts, I purchased stainless mixing bowls at Wal-Mart for about three dollars. For transmission shifting rods. I found two pieces of used stainless tubing at a salvage yard, had plates welded onto one end, so they would stand up and hold liquid. I think the two pieces cost about ten dollars. The welding shop charged me an hour to weld them. If a bowl is used for long parts, a person would have to buy a lot of solution. To heat the solutions, I used an old propane burner that plumbers used years ago to heat pots to melt lead. I don't think they are made anymore, but a plumbing shop that has been around for a long time might have one lying around. I bead blasted the parts before plating and am happy with the results. The darkness of the color does seem to depend on the steel. Make sure you have some ventilation.
That's a great help Randy, thanks. I'm trying to figure how much I should get but I can't seem to find on their site how much to dilute each type. All I've found is that the manganese and zinc solutions each have different dilution rates. What have you found to be the proper dilution ratio of each type?
Also does the finished part have that proper original phosphate look that the judges are looking for with this type of coating?
The dilution rate is included with the bottles. I got a pint of each. The black solution makes 1.5 gallons, the gray makes 3.5 gallons. I have not had my car judged but the results look fine to me.
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