Enter your page count, quantity, and purpose — get the recommended binding and paper, then the spine width and flat cover open size for that exact binding (saddle stitch, perfect bound, or hardcover). Or calculate the open/flat size for bi-fold, tri-fold, and gate-fold panels.
This tools section is actively evolving — always confirm figures with our team before production.
Recommended Binding
Saddle Stitch
based on your purpose & page count
Interior Paper
100 gsm
80–100gsm Uncoated / Woodfree
Cover
250–300gsm Silk or Art Card, Matte or Gloss Laminated
No block spine — single center fold · Bleed 3mm all sides
Solid = cut line · Thin inner line = trim/turn-in guide · Dashed gold = fold line · Shaded band = flexible joint
Block Thickness
4.00 mm
0.1250mm/leaf × 32 leaves
Spine
None (folded)
folded & stapled — nothing to print on
Cover Open Size (incl. bleed)
426.0W × 303.0H mm
flat/unfolded
Single Page (trim size)
210mm × 297mm
16 nested sections (saddle fold)
Block 4mm
Schematic, not to scale — sections nest inside each other, then get stitched and trimmed together as one block. As page count grows, inner sections sit slightly deeper toward the trim edge ("creep") — a wider inside margin is common practice on saddle-stitched books past ~32pp.
This is a specification guide, not a price quote — the spine formula and hardcover allowances are estimates; always confirm with a physical dummy before final approval.
