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[email protected] bnwelch@gmail.com is offline
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Default drilling pencil lead on a lathe

On Tuesday, November 1, 2016 at 2:05:38 PM UTC-4, Electric Comet wrote:
ok he was not using a wood lathe but one could turn wood on this lathe
if one wanted to

he drilled a hole through a point 7 or point 9 mechanical pencil lead

it was a competition and his competitor was using another technique
that was more interesting and did not involve a lathe

i think it was called edm or something like that

it used an oil bath and electricty to drill into the lead

the drill bit was an electrified probe where the electricity did all
the work

very precise and acccurate too

iirc the edm shop buttered its bread doing fuel injector nozzles


It must be true...A keyboard with no punctuation keys...Why else would someone go thru the effort of typing 5 letters in lieu of 1 simple keystroke?