jcarlosmor wrote:
> Hi to everyone. Do somebody has experience using/building a spray
> etching tank (the kind similar to Kepro, or even more proffesional
> units)?
jcarlosmor, please take a look at
http://www.prototrains.com/etch2/etch2.htmlI didn't make the tank for PCB's, but it would make quick work of one (I just joined this list to see what was current in photoetching for PCB's, because I have some prototyping I'd like to do. I have not gone through the archives yet...)
"Tank 4" has been out of comission for a couple of years, but I am currently working on Tank 5, with the same pump and nozzles. The nozzles are very well matched to the pump's output, and put out a good full spray cone (as you can see from the article, I just use one nozzle per side and rotate my workpiece while spraying (in Tank 5 the rotation will be by a gearmotor a la rotisserie)
In the new tank, I have found a flexible hose for use in underground sprinkers called Cobra Connector. It has pipe thread ends, and that has let me put most of the pressure-side tubing inside the tank (only a small connection from the pump through the tank wall is exposed)
I will put some pictures up on my website soon with my progress. Please feel free to ask any questions that aren't explained well enough in the article.
Best regards,
Randy