"I’d purchased a 4-pack of Pilot G2 mini 0.5mm
pens for pocket-ability, but found the ink bled a bit too much through
the thin Moleskine pages, so I picked up a 4 pack of Uniball Signo RT
Gel 0.38mm pens. The thinner 0.38mm gel pens work well with Moleskine
paper because the line is thin and quick drying.
This weekend I was looking at the Uniball Signo and G2 Mini, when I
wondered if I could hack the Uniball 0.38mm refill to work in a G2 mini
pen body. When I took the two pens apart, I realized it could be done,
with a flick of a utility knife to trim the Signo’s cartridge down to
In the spirit of DIY, I gave it a try. The G2 mini to Uniball Signo
mini conversion worked so well, I’ve decided to to share the easy
conversion process with other Uniball Signo fans out there.."