--- In
Homebrew_PCBs@yahoogroups.com, "Stefan Trethan"
<stefan_trethan@g...> wrote:
> and here is was wondering how i could produce very small holes,
for very
> small bubbles.
> It seems larger is OK, though small would be better for
regeneration.
My dad showed me how to put very small holes in a cigar by passing
the thing back and forth many times between the arc of a large, high
voltage spark gap. ...it was clamped to the end of a long plastic
rod of course, not held by hand.
Anyway, the arc punches so many holes that you can't draw air
through the end of the cigar and it becomes impossible to light, but
the holes are so small that you can't see them with the naked eye.
We had an uncle who used to light up these really smelly things
after T-Day dinner... It still smelled, but it was worth it to watch
him huff and puff.
It might not work on plastic tubing if the plastic gets warm enough
to close the holes or if the insulative ability of the hose is
enough to deflect the arc around the hose rather than through, but I
thought it might be worth mentioning.