Re: Gun Blueing
Posted: Fri Oct 02, 2015 1:40 am
Would a low flame from a small gas blow torch burn away all the grease and oil from the surface of the parts to be blued?
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i am afraid it may bake the carbon on the surface preventing the bluing solution to come in the contact with the metal surface.GNV wrote:Would a low flame from a small gas blow torch burn away all the grease and oil from the surface of the parts to be blued?
You can't use a blow torch or flame. It will burn out the grease and oil but wont evaporate it. It will leave a residue/ carbon on the metal which will then have to be scrubbed off using emery paper. Also you can't use WD 40 as it has lubricating properties and will leave a coating on the metal but that wont be difficult to clean up.GNV wrote:Would a low flame from a small gas blow torch burn away all the grease and oil from the surface of the parts to be blued?
GNV,GNV wrote:I always use surgical spirit for degreasing even though it leaves traces of moisture. I simply wipe it off. What I want to know is after degreasing and final cleaning and polishing and just before bluing would heating the parts being blued result in better bluing and finish. I saw it in some youtube video. I am using Ballistol Rebluing Liquid.
I use Birchwood Casey perma blue liquid, about 2- 3 coats. Finish off with a final cost of Birchwood Casey perma blue Paste. This gives an amazing finish. This method was first suggested to me by our fellow member and a good friend of 20 years, DavidGNV wrote:I always use surgical spirit for degreasing even though it leaves traces of moisture. I simply wipe it off. What I want to know is after degreasing and final cleaning and polishing and just before bluing would heating the parts being blued result in better bluing and finish. I saw it in some youtube video. I am using Ballistol Rebluing Liquid.
You are absolutely right. I guess I didn't word appropriately. By Polish, I meant using very fine grit paper and steel wool, using water as the medium, then cleaning of with industrial grade Acetone. I'm sure GNV also meant this process.aadhaulya wrote:BD,
The part to be blued should ideally be bare metal with no contamination. Polish gives the metal a good look but leaves a coating of wax or silicon on the metal creating a barrier between the metal and bluing compound thus reducing its life.
Atul
That was good experiment you conducted and were successful. We need feed back like this to go ahead with our gunsmiths needs. Keep it up.essdee1972 wrote:Thanks, gentlemen!
GNV, will look up your post.
Latest update: I was right (finally!!). There was too much bluing compound. After rubbing off the rust, I applied the Gsmith gun oil. It's been 7 days now, and there's no sign of the red stuff. Thaneed back k God!
I regularly use the Ballistol blue on my carbon steel knives. Never faced this issue. Probably I was a bit too generous with the blue this time around.