Thanks you guys!!
Can't believe you still have that knife (and 2 1/2 sheaths) Joe, that was the first knife of this fighters design.
Dave if you don't mind my asking, what oxidizer and process(es) did you use to patina the silicon bronze?
Hi Phil,
Here's the way I do it now, I may find or find out about a better method later.
List of tools and materials used;
*CAUTION* Chemicals used are acidic, wear protective clothing, gloves, goggles, respirator and good ventilation.
Metal etch, you can use a mild sulfuric or phosphoric acid or use a product named Metal Etch by Jasco
Antique patina, I purchase from Reactive Metals Studio
http://www.reactivemetals.com/ they carry other useful products and some good reading also
Cotton applicators, I use thin round cotton applicators I buy from the pharmacy, I think they're used for applying make-up.
Fine Fibral wool, a non metallic abrasive wool. The brand I use is no longer made but Superior Abrasives sells I believe the exact same product called Shur Brite Wool
Polishing paper, I use 3M polishing paper in 1200, 4000 and 6000 grits
Mineral oil and/or wax, I'll use mineral oil if the rest of the handle is stag (oil is good for the stag also) and Renaissance wax if the handle is wood
My current method;
1) After shaping the bronze bring finish to almost mirror (no visible sandpaper scratches), I'll use the 3M polishing papers with firm backing so I don't deform the shape.
2) Etch the surface of the bronze with the mild acid, (around 5% solution), visibly all this should do is dull the finish giving the patina a better bite.
3) Apply patina with cotton applicator, I use a diluted solution, 3 parts distilled water - 1 part patina. Keep rubbing the patina on until you reach a consistent, desired color.
4) Using the fine fibral wool rub the bronze until you stop removing the patina, it'll probably look blotchy. Apply more patina then rub again with the wool, less patina should now be coming off. I'll repeat this until no patina rubs off, usually 3 - 4 times.
5) Apply wax or oil, if my handle is wood I'll apply a few coats of Renn. wax, if my handle is stag I'll apply the mineral oil on the whole handle, it protects the patina and keeps the stag from drying out....plus it looks good!, no matter what the handle material use the wax on the bronze if you prefer
6) Start a new knife
Thanks again,
Dave
