Old School

You may be old school if you have used this formula
Diameter of cutter divided by diameter desired = sine of the angle
to tilt the head

Used this method many times during the early 60s

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I have several star drills and have sharpened them multiple times each.
 
Remember the Spring Reverberation system for car radios. Yup yer old school. LOL[/QUOTE

Had one of those and they were great until bumpy road.


But then you also needed poor man's channel 3....


After you installed your aftermarket stereo you pulled a wire from each speaker to the old dash speaker and the "difference" voltage drove it.

Sounded good too! If speaker was good....
 
STEREO!?? I thought that this forum was Old School. My spring reverb was installed with my vacuum tube AM radio. :cool: And yes, the big problem with these spring reverbs whenever you hit a bump. Sounded sorta like kicking an empty trash can over and its lid rolling gown the alley.
 
The most fun with spring reverb was had with BIG guitar amplifiers. If you kicked the amp (heaven forbid) or just rocked it back and forth on it's base you could get sounds like the world coming to an end, crashing and booming. Great fun at a gig at 130dB.
 
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