MechPen
The Journal
How Much Does a Full Pocket Writing Kit Actually Weigh?
Two worked example kits — a light everyday loadout and a heavier full setup — totaled up by weight, with what the resulting pocket-carry verdict actually means.
How Mechanical Pencil Mechanisms Actually Advance the Lead (and Why Some Jam)
How ratchet, twist, and shake mechanisms move lead out of the barrel, how much they advance per click, and why grade and diameter both affect how a mechanism jams.
Absorbent, Standard, or Coated: How Much Paper Actually Changes Ink Dry Time
The full nib-by-paper dry time matrix worked out in seconds, and how to weigh paper's dry-time cost against its feathering and bleed resistance when choosing a stock.