Absolutely love the pilot knock! Have had comments from lots of people at work
who have grabbed it and given it a try. Hard to keep my eye on them all the
time! Some have disappeared. When the ink runs out- I find out where the pens
have gone. Small price to pay for such a great little pen.
I used it in the Uni Ball Signo DX & don't even need scotch tap. Once you
measure & chop a piece of the orig. refill in the right size, you just place a
slim knock refill on top of it, use a spring to hold it in place & it's as good
as if it were made that way. Hope this suggestion helps some that like this
refill like myself but don't like to use a microscopic pen.
Yeah, I hack it into other pens too. For some reason, it's better than the
traditional hi-tec C but too small/short so I just get some scotch tape, extend
the refills and put them into just about any other pen (I've done Pilot G6s, Bic
Velocity, etc.) You learn to use your ingenuity.
Hacked it successfully into a Fisher Space Pen (the Astronaut variety with a
clicker, although refill-wise it doesn't matter). It's a couple of millimeters
too short, though, but it doesn't affect writing per se but it's hard to see the
tip on paper. Truth be told, I bought this refill in attempts to hack it inside
the Coleto multi-pen (due to it being considerably cheaper but virtually
identical), but it wasn't possible easily enough. Writing quality and emptying
speed are practically the same also.