That's because horseshoe nails here (I get them from Centeur Forge Blacksmithing Supply) are actually mild steel, and there are trace minerals in them.

Also this would prevent the gas flame being blown out a few times due to the occasional sudden gust of wind.He advocates the addition of Sodium Nitrate 20% to the brew which is said to accentuate a deeper blue found in DWM Lugers of the 1917 vintage.

I boiled some water and the piece turned black within seconds of being immersed, I let it boil for 'bout twenty minutes and removed it and it had that thick black velvet that was described. If you’ve never heard of gun bluing, you are in luck because we are about to explain what it is and how to blue a gun to maintain its look and performance.This article includes a list of general references, but it lacks sufficient corresponding inline citations.