Homebrew PCBs

On 15/04/2010 20:03, Steve Maroney wrote:
> Hey Guys, new here to the group and I love it.
>
>
>
> I've tried the Toner Transfer method a few times and wasn't happy with
> the inconsistent results, so I tried the photo resist method.
>
>
>
> As the subject states, when I put my board in the positive developer
> solution, of course it ate away the un protected  areas but also ate
> away the circuit image as well.
>
>
>
> I'm using this developer:
> http://www.jameco.com/webapp/wcs/stores/servlet/ProductDisplay?langId=-1
> &productId=156734&catalogId=10001&freeText=156734
>
> And these boards:
> https://www.jameco.com/webapp/wcs/stores/servlet/ProductDisplay?langId=-
> 1&productId=156751
>
>
>
> I've mixed roughly 1 part developer to 10 parts water.
>
>
>
> I've exposed the board / image to a 125 Watt CFL for about 45 mins.  I
> wouldn't think longer would hurt anything.
>
>
>
> Too strong of  a developer/water mixture ?  Did I keep the board in the
> developer too long ? Any ideas  ?

Over exposure, probably.

Leon
-- 
Leon Heller
G1HSM