Birchwood Casey provides you with the best option for touching up scratches and torn spots. It provides a non-streaky finish to any steel, apart from stainless. Both the Perma Paste Gun Blue and the Perma Blue Liquid Gun Blue offers perfect blueing to any metal, which has been well cleaned and free of dust. However, the Liquid Gun Blue darkens faster than the Perma Blue Paste Gun Blue, but the Paste Gun Blue will provide a denser finish.
N.B: Stainless steel and aluminium cannot be blued with Perma Blue Liquid Gun Blue.
Q: Why is the Perma Blue, not taking to the metal?
A: The chemical will not blue any metal that is not complete steel. If you need to confirm if your metal is 100% steel, place a magnet on it and see if it sticks. If it does not stick, then the metal is not !00% steel. One other reason might be that the metal is dirty.
Q. What quantity of Perma blue coats should I apply for it to get darker?
A: The metal will not get any darker after 3 - 4 coats.
Q: What can I use to apply the chemical?
A: You can use synthetic brush or cotton swabs to apply the chemical.
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