Just another thing about shop safety I thought I’d pass along.
I’ve been a bench jeweler for over 20 years now. Having used
ultrasonic cleaners every day I’ve recently noticed something.
I’ve lost some hearing in the high frequency range. These little
miracles of modern tech. definetly have their downside. Perhaps we
should consider these things when purchasing a new one and even
enclose them when running if they’re in the same room with us
everyday. When younger, I knew a 50-yr veteran of the trade who
would not have one. He thought they just loostened stones. Some
of this I would imagine was due to just being stuck in his ways
as he prefered to scrub them indivually by hand and dry them in
sawdust! However, nothing comes without a price and this I think,
is the price of speed in our work.