Kyrre Aalerud wrote:
>
> Just wondering...  How fast do you get a board etched with this
> gravety-method ?
> With my self-modded bubble-tank I can etch a 70x120mm 1-sided board in about
> 5 minutes with fresh acid.  Is it comparable to your speeds?

Fresh warm mixture is about the same.

A few other benefits...

- all etched copper "rubbish" stays on the bottom of the tank so
solution stays very clean.

- I've had etchant for years and still works

- bubbles sometimes smear or erase some artwork, especially small tracks
in in overly warm solution.

- The gravity method creates very sharp track edges.

- cheaper, less fuss, no mess

- double sided is a bit slower as the "top" layer pools it's own residue
on top, but the remainder etches quickly when flipped over.

--
Best regards

Tony

mICros
http://www.bubblesoftonline.com
mailto:sales@bubblesoftonline.com

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