First Cut with the
I'd bought a dual action air sander at a garage sale for $2, but when I
it home I found it was cheap because the plastic poppet valve had
Bought a 1/2" aluminum rod and went to work.
Turning the valve - just two diameters.
The shoulder on the bottom is for locating the spring
Pulled it out, hacksawed it off the rod and flipped it over. This
is the sealing end being faced.
This is what the valve stackup looks like. New piece is ready to
Spins like a big dog (and also DOESN'T spin when you don't want it
to!). New tool repairs old tool!
Second cut, 2/1/04. My Guerchoti bicycle had a old Campagnolo bicycle
crank that wouldn't downshift between the front sprockets
reliably. Took .020 off the back of the sprocket mounting arms
and now it shifts like a dream. First time I used the milling