Re: ATM Anodizing problems.

[Del Stanton <sd20@earthlink.net>]

Are you rectifying the AC output of the transformer?  I am
quite sure that you need DC to anodize.  I should think a
capacitor would be a good idea - but you will require quite
a large one to smooth such a high current supply.

Del Stanton   sd20@earthlink.net

> Sam Michael wrote:
> 
> I recently finished my anodizing system but am having some
> problems.
> 
> The surface of the parts I am anodizing is badly
> roughened.
> 
> I am not sure what the source of the problem is
> 
> The following may be the cause...
> 
> I built my own power supply.  It is a large transformer 36
> Volts at 20 Amps.  A variac is used to vary the primary
> voltage.  This make the supply variable.
> 
> I am not using a capacitor to clean up the output.  I
> didn't think this would matter just slow the process down
> a bit.  But, I may be wrong.
> 
> I have been running about 15 amps into the parts (about .3
> sq ft).  I have been going about 1.5 times the 900 rule.
> 
> Any ideas?
> 
> Sam.
> 
>