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Subject: Re: [Homebrew_PCBs] Re: etch tank idea

From: Matthew Smith <matt@...>
Date: 2008-04-27

Quoth Adam Seychell at 2008-04-27 07:58...
> Interesting. I wonder if this concept could be made to work in a
> vertical tank. The PCB could be mounted to an plastic shaft that is
> attached to some cam assembly at moderate speed. The circular
> displacement might only be several mm , but the agitation could prove to
> be uniform and vigorous. I assume any mechanical method would add a lot
> of complexity, machining up bushes, wheels, brackets, et.

How about this: consider a 'normal' bubble etch tank. Rather than
having two clips on a board attached to something at the top of the
tank, have one clip attached as usual. The second clip is attached via
a length of fishing line to an arm mounted on a motor. By using a
pulley system, the motor wouldn't necessarily need to be too close to
the tank.

Microwave oven turntable motor?

Cheers

M

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Matthew Smith
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