I've used T-4for years. Not as permanent as a hot blue but orders of magnitude easier to use. Cleaning the surface to be blued is essential and warming with a hair dryer before treatment helps too. Follow the directions and you will be pleased with the result.
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I Have used this product in the past, and it still works great. I just ran out and ordered another bottle.
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Came quick, have not used the product yet but was priced reasonable!
Verified purchase: Yes | Condition: New
Have not used cold blues very often. That said when properly cleaned, prepped, and heated, it leaves quite a nice looking surface.
Verified purchase: Yes | Condition: New
Stuff works MUCH better than birchwood casey super blue. Puts down a much darker color. Cost a little more but the results are fantastic. I did a whole rifle. You do have to be more aggressive when rubbing it on but it is well worth it.
Verified purchase: Yes | Condition: New
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