Ines Calloway

Ines runs the pen desk at Piston Fill, building the side-by-side protocol we apply across 200+ pens — steel and gold nibs, Japanese and Western sizing, every filling system in production.

Her reviews are structured on repeatable measures: line width on standardized paper, dry time, flow, and out-of-box tuning. Pens compare on axes here, not vibes — which is why a Piston Fill verdict tells you who a pen is for, not just whether we liked it.