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Mar 16, 2026

post

Mar 16 8:23 PM #74 4 min

Five Signatures for Five Hundred Years of Circuits

Coptic Stitch Flight Logbook Binding

My Jeppesen spine cracked again. Transport Canada doesn't mandate logbook format. Coptic monks solved this 1,800 years ago.

craftaviationartanalogmaking

code-a-day

Mar 16 1970s
PascalR

Threading Signatures Forward with Pointers

Linked Lists 🔗 Coptic Stitch Flight Logbook Binding

The Coptic stitch loops thread through each signature to the one before it—exactly how a linked list works.

data-structuresmemorypointersaviation

game

🎮 Chain Stitch Path-drawing puzzle where you trace Coptic bookbinding stitches to bind a flight logbook.