R.B.
Quote:
|
I REALLY need to get more tanks because at 40 minutes per batch, it is going to take FOREVER to do it the way I have been.
|
It doesn't always HAVE to be that long. It all depends on how thick a plate you want, and that is purely current & time dependent.
In this case w/shadowed areas, longer times will be helpful.
Commercial fasteners have very thin plate, .0002-.0004 or so. That's what's nice about DIY, you can plate as thick as you want, and end up w/a part that's better than new!
Quote:
|
I am using a non-caswell acid salt dip, and I was wondering it that was something unique to that chemical.
|
I forgot to ask about that yesterday, but am curious. What exactly are you using? "acid salt" can be any one of many different concoctions. And what concentration (% wise)?
All you need is a pure acid, appropriately diluted. Nitric is best, but difficult & expensive to obtain. Muriatic is second best, available at any local hardware store as "concrete cleaner" (muriatic is pre-diluted hydrochloric acid, about 30% solution). Only sulphuric should be used before black chromate.
OTOH, yellow chromate already has a significant acid content, and is "self-brightening". You don't really need a pre-dip.
Sean