a few questions

[boostboy97]

as far as power supplys goes i cant really find a straight answer and what i wanted to know is how much SA can i ano with each of the power supplies .

3 AMP=?
5 AMP=?
10AMP=?

also, does the 720 rule apply to LCD anodizing?\

I read in the manual that its 4.5 AMPS per sq foot of surface area? is this correct?

[sswee]

as far as power supplys goes i cant really find a straight answer and what i wanted to know is how much SA can i ano with each of the power supplies .
It depends on what CD you run. Standard LCD anodizing uses 3 to 6 ASF. The 4.5 ASF is recommended because it gives more leeway to inaccurate SA calculations.


Using a 4.5A CD
3 AMP=? 96 square inches
5 AMP=? 160 square inches
10AMP=? 320 square inches

To calculate: 4.5a \ 144" (1 square foot) = .03125A per square inch
3A \ .03125A per square inch = 96 square inches of surface area (SA)

also, does the 720 rule apply to LCD anodizing?\

Definitley

I read in the manual that its 4.5 AMPS per sq foot of surface area? is this correct?[/quote]

Yes that is correct. There are many things you can change to effect the growth of the coating. But they only cause problems if you play with the parameters before having a complete grasp of what is going on and why. If you need help with calculations or anything, feel free to ask.
SS

[boostboy97]

so , let say i have 14 square inches of SA, i would then multiply 14x .03125 which is 0.4375. is this what i set my power source to?
and is this my calculation for time? 720/0.4375 x 0.005 = time?
is 0.4375 my ASF.

sorry if these are repeated questions but my math isnt very strong and i would really like to understand what im getting into before i get too deep in it .

[sswee]

so , let say i have 14 square inches of SA, i would then multiply 14x .03125 which is 0.4375. is this what i set my power source to?

Yes.

and is this my calculation for time? 720/0.4375 x 0.005 = time?

No. 720min \ CD x desired coating thickness in mils = run time
It's 720min \ 4.5A x .5 mil (from .1 to 1 mil) = 90 min. run time
1 mil = .001" , .5 mil = .0005" For calculations use mils.

is 0.4375 my ASF.

No. 4.5 is the ASF(amps per square foot) or the CD (current density).
.4375A is just the amperage setting for the PS for the 14" SA part.
Round it off to .4A since the PS probably only has a single place decimal point adjustment.

[kco1196]

It's 720min \ 4.5A x .5 mil (from .1 to 1 mil) = 90 min. run time

You mean 80 min run time?

Great info SS! I'm a newbie reading all I can here.

[boostboy97]

awesome, i think its all coming together in my head now.
thanks

[sswee]

It's 720min \ 4.5A x .5 mil (from .1 to 1 mil) = 90 min. run time

You mean 80 min run time?

Great info SS! I'm a newbie reading all I can here.

Yes it's 80 minutes. Didn't have my reading glasses on and misread the calculator. It's all easy after you know it. Sometimes not easy to get a handle on it in the beginning.
SS