How to improve PCB "stickage"?

A

alexmin

Joined
Nov 16, 2005
Messages
513
I am using PCB powder to prevent decarburization during HT.
Normally I grind my O-1 blades to 400 before HT.
The problem with PCB is that sometimes I get spot or two that are not covered and I have ugly decarb on my O-1. This is with two or sometimes tree layers of PCB! I suspect when PCB melt it just slides of some smooth points.

I could grind only to 120 grid to improve PCB "stickage" but that kind of defeat purpose of PCB to minimize grinding after HT.

Any tips for me, guys? Is there any stuff I can put on my blade prior to PCB to improve adherence?
 
degrease the hell out of the blade. the slippery spots are quite likely fingerprint marks. try wearing a pair of diposable rubber gloves like vets do, they're only about 5 bucks a box of 50. then degrease and apply the pcb
 
I heat my 01 to 600o, let it soak a few minutes, then coat as best I can. Then re-heat with a propane torch and put more powder on until I am confident with coverage. The torch flame levels out out the bubbles some what and causes the coating to crust up. Looks like hell, but works. I have never found an area that would not take the coating!
 
What KIWI said. Plus I take mine out again @ 800 and check on em. I have had them fall on their side in the kiln and the powder still does not come off. I jut clean with acetone and then dawn befrorehand.
Matt Doyle
 
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