This card’s address can never change, so anything new about it has to land here:
corrections, a fold order that turned out to be better, a material someone tried that
worked. Tap the card again in a month and there should be something on this page that
is not on it today.
2026-08
A2 is the drawing, not the shopping list
The pattern prints on one A2 sheet, 594 × 420 mm, and tiles across A4 pages because no home printer takes A2. The material is a separate number: both faces of your card give the 0.6 m² of foam you need.
2026-08
At 97% the fit holds and the mantle shrinks
Step 01 says a 97% print leaves every joint loose, but the tab and its slot shrink together, so the fit holds. What comes out 3% small is the mantle.