Paper and materials
Use one uncoated US Letter sheet, 8½ × 11 inches, at your selected 75 g/m² weight.
Paper source: HP Office20 · US Letter · 75 g/m² · 500 sheets at Staples. Confirm delivery and availability for your address before buying.
Check the package for the sheet size and weight. No other materials are needed.
What the preview can tell you
This is an experimental folding guide. The preview resolves the folds using a zero-thickness sheet. Paper thickness, layer collisions, physical foldability and flight remain unverified. Check your real folds and keep test flights in a clear area, away from people.