Titianium plates

[hurricaneracing]

OK I spoke to someone today about hanging plates and I just wanted to confirm the answer.

If I have an aluminum "plate" that is 8''X4'' I should start my 720 rule with approx 64 sq inches before I add any parts. Is this correct? I was told if I didnt want to anodize the ''plate'' not to include the SA in my calculations......

With that said if I use titainium plates I will only need the SA of what I am hanging to be anodized......

[destroyer125]

since your cathode doesnt anodize even if it is aluminum it wont matter. You calculate the SA of your part only

[-AAPB-Eric]

there is a rule:

For proper anodizing without worrying about shadow effect you should use a 4 cathode: 1 part SA ratio. I find when i break this rule, my cathodes bubble like nuts and being stressed. With the 4:1 ratio, everything works better.

[hurricaneracing]

Originally Posted by destroyer125

since your cathode doesnt anodize even if it is aluminum it wont matter. You calculate the SA of your part only

The plate is attached to the cathode. It is used to hold the parts in the ano solution. So auctually it does get anodized, that is why I wasnt sure.

[destroyer125]

How is it attached to the cathode?

[hurricaneracing]

I have an aluminum bar across the tank with al. wire attached to it. The al. wire is then screwed to the plate. So the plate with the parts attached and a small portion of the hanger wire are submersed in the solution.

[destroyer125]

It shouldnt be a problem

[sswee]

hurricaneracing,
This thread is a little confusing, so let's see if I have it straight.
First, the cathode plate is connected to the ground lead and does not anodize. Even if it is aluminum instead of lead. The parts and sometimes jigs connected to the positive are the anode.
The way I understand what you said, the 8" x 4" plate is an aluminum plate being used as a suspension jig to hang the parts from. This is suspended from your tank bar by aluminum wire. If this is right, then you will have to include the plates SA in with the total SA of the parts. The plate will need to be stripped if you want to use it for another run just like aluminum racking. If you use Ti plate, it will need to be primed before it is used for a run then you shouldn't need to do anything more before re-use. You shouldn't have to add it's SA to the parts SA using Ti unless the Ti jig is extremely large in relation to the parts.
SS

[hurricaneracing]

SSWEE..
You got it the cathode was brought up in previous post. But yes the rack is attached to the anode. You also answered my question, the SA shouldnt need to be figured using Ti racks. You did mention unless there was a large differnce? The ti plate will be 8'' X 4'' with small fingers on each side where I will have small parts ''pinched'' in between them. Total SA to be anodized maybe 30 sq. inches at the most. Would you consider that a large differnce?

[hurricaneracing]

Also what do you mean by priming the ti racks first