Dear Sir,
Young people think they know it all untill
oportunity knocks & then your get a reality
check. This happens to describe how I felt
when my boss decided to give me a bench model
Cavitron 20k Hertz Ultra sonic welder. Well
how does one learn to make custom horns and such? The old manual shows a device that checks horn design but of course this magic box is missing. How can I build horns with a lathe, drill press and mill equipment?
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