View Full Version : K-phos pretreatment before gunkote?

'01 GSR
June 23, 2002, 04:17 PM
I tried this, but I notice the gun seems smoother afterwards, and not like it will have enough bite for the gun-kote.

So I wiped the gun down w/ MEK, and got some film off, but still see no roughness from the sandblast. The gun is still a darker gray than before I sprayed it, though.

I've stopped at this point and would like to try sandblating again before repeating.

Anyone know what strips this stuff off?

Is the "smoothness" normal?

June 25, 2002, 11:09 AM
I don't know what takes it off, but I used it on my CZ-70 and it worked great. It provided a somewhat smooth base, but so does paint primer.

Did you try it on a piece of scrap metal? You want a smooth finish when done, and Gunkote isn't supposed to be laid on thick.

I sandblasted with 120 grit aluminum, oxide, K-phos'ed, then applied Silver Gunkote. I have had no problems with the finish so far after 3 of 4 months. The final finish came out verry smooth and glossy - almost slick.

'01 GSR
June 26, 2002, 09:44 AM

My gun was very smooth after I treated it.

I'm only worried b/c I want the gun-kote to stick properly.

June 26, 2002, 12:18 PM
The Gun Kote might chemically bond to the K-Phos surface.

'01 GSR
June 26, 2002, 03:42 PM
I hope so.

Still, I want to repeat the process to see if I get consistent results, unless someone can confirm to me that my original results were correct.

June 27, 2002, 08:53 AM
GSR, that's why I said try it on some scrap metal.

I sandblasted a piece of pipe, Kphos'ed it and Gunkoted it to make sure I understood how to apply the stuff and to see what the finish would be like. Once I was satisfied with that, I coated my pistol.