Presto Black Stainless Steel Blackener (SSB) by Birchwood Technologies - Cold Brush on Blackening Solution for Stainless alloys, Traditional Patina Stainless Black Oxide Touch-up (Black, 1 Quart)

Works just fine with patience, following instructions, keep attention to detail and more patience as will require several recoats. Works great on fine media bead blasted gun parts. DOES NOT like smooth shiny parts. Must have the surface roughed up a bit to get good results. I dip my parts in the solution and it takes several dipping sessions. Only way i ever got uniform results. After that, the finish looks nice and is durable. If you're impatient and need instant gratification, this solution is not for you.

I first tried Caswell ss blakener. Fought with buildup on part. Eventually achieved an even gray finish. Trying to match a finish that is black so I ordered Birchwood ss blakener. Omg this is far superior! No powdery black gunk on the surface. I brushed on in multiple stages, cleaned and dried the part. After sealing, have a nice blue black finish that is flawless.

I was surprised at how quickly it blackens my stainless steel knives. I noticed that the low carbon fastners blackened fast and evenly, but the higher-carbon stainless blades and pocket clip blackened slower and unevenly. I found that continually rubbing the blades with the solution evened out the black; it took 2-3 minutes (instead of 1 min for low carbon stainless steel).

Application was very easy. I degreased the old winchester stainless barrel several times. Used a latex glove to spread on solution with cotton cleaning patches, waited 3-5 mins and rinsed/sponged with hot water. Repeated a few times but never did get much past a darker gray color. Very uniform finish. When wiping down and oiling, darker finish will come off, but enough color remains to make it worthwhile. Oil/wax to 'seal" makes it glossier. A bit caustic to breathe - suggest using in a ventilated area. Dump the used rags/patches ASAP. Would use again if needed. And I have a ton left! Would love it if I had gotten a blacker finish.

Works as intended. Used it on a pocket knife. The treatment appears to last and does not rub off.

This is a waste of money. It certainly blackens stainless steel, but DON’T TOUCH it! It comes off as easily as it goes on. Total waste of time and money!

Worked great on stainless steel rifle barrel. Easy and quick.

It's decent. Not scratch resistant, and it doesn't make your metal "black" but it does give it a nice aged patina if you're trying to antique something. I recommend leaving it on a while before you rinse, and do a second soak. Third if you want. Also... the smell... oh my god it is horrifying. Definitely discard used patches and cloths immediately and use it in a well ventilated space.