Talk:Pledge: PCB Etch Tank

These are quite good, but fairly old technology. See the spray tanks from the same manufacturer for the latest and greatest. Also, the bubble etch is only part of the process - if you want a quality setup it's worth considering whether one of the multiple tank arrangements are worthwhile.

I'm not proposing a much bigger pledge requirement, but more of a wait-and-see approach. It's very easy to build a bubble etch tank, and it might be more interesting still to build a spray etcher.