Hello, I'm wondering it its possible to seal the shaft from a very low RPM (< 20 RPM) electric motor (stepper maybe), enough so its protected from splashes of etchant. Of course a suitable plastic sleeve will be needed on the metal shaft so no metal is exposed. A quick google search showed a typical commercial waterproof motor will use two shaft seals and design to run ten meters under sea water. I'm thinking even if etchant doesn't get inside the motor housing then fumes might, and so could possible corrode the steel. Any thoughts ?
Message
motor inside etching chamber
2003-11-24 by Adam Seychell