Concerning your refill, a new Space Pen refill normally has about 2.5 miles of write-out.
This length is a misnomer however, because the time you get out of a refill depends
somewhat on how much you write, and IF the refill cartridge got a "full shot" of ink on
the assembly line. With the refills line being one of the only production areas that is
highly automated, it's difficult to say if your refill received a full shot of ink AND
did it receive the full 40 psi shot of nitrogen. With the cartridge being brass, we
can't see the physical ink supply inside. When a space refill begins to run out of ink,
the "oozing" might be more pronounced.
The "oozing" phenomenon that you identified is characteristic of a space pen refill that
is sealing itself yet in a small amount - not a large blob that requires wiping before
every writing situation. With 40psi of constant pressure forcing the space pens visco-
elastic ink to the point, the point tolerances of a space pen are very precise. Within
these tight tolerances, there needs to be just enough "room" if you will, to allow the
ink to attach itself to the ball that distributes the ink to the writing surface.
Now the real weird part. Not unlike human blood clotting, the thixotropic ink must "seal
itself" quickly (and most often not noticeable to the user) with a small amount if
residual ink at the point. This way, you won't have a pocket-full of ink. If this
"sealing" process produces amounts of ink too large on the ball point, then something
must have been wrong with the viscosity (or thickness) of the batch of ink that was used
in your refill. We will stand behind your refill yet please understand when a space
refill begins to run out of ink, this oozing occurs.
Jim Jobin, Owner.
This is the response he gave 20 minutes after I sent him an e-mail asking about the blotching. Excellent.