Foamboards Cardboard for bookbinding

How would you make this? (Pics not mine) : r/bookbinding

20 Pcs Book Board, Binders Board Chipboard Designer Bookboard Kraft Heavy Duty Chipboard Sheets Bookbinding Supplies for Book Binding Cover (Black, 12.5 x 10 Inch 80PT)

Bookbinders grey board Cardboard for bookbinding

Thick Cardboard for Handmade Book Binding. 4 Sheets of 2mm Thick Card. Greyboard. Box Making, Craft Supplies for Artists and Makers

Duplex Board 3mm/4mm Cheap Double Sides Gray Bookbinding Cardboard Paper - China Grey Chip Board, Grey Chipboard Price

impressBIND covers Hard linen Leitz 10,5 mm

Bookbinding Workshop: Multi-section Case Binding London

Elmer's Foamboard, 1/2, White, 20x30

bookbinding workshops

Features and Advantages of Different Types of Book Binding - Blog

Thick Cardboard for Handmade Book Binding. 4 Sheets of 2mm Thick Card. Greyboard. Box Making, Craft Supplies for Artists and Makers

Proper Size for Using: the book board is approx. 30.5 cm/ 12 inches in length, 30.5 cm/ 12 inches in width, 1.27mm/ 50pt in thickness, suitable size

20 Pcs Book Board, Binders Board Chipboard Designer Bookboard Kraft Heavy Duty Chipboard Sheets Bookbinding Supplies for Book Binding Cover (Gray, 12

Bookbinding cardboard Kappa 2,00 mm - Solid Grey, A4, 20 sheets

Bookbinding Tutorial {Brought to You by Jessica of Greenleaf & Blueberry}

Miniature Japanese Stab Bound Book Mini Bookbinding Tutorial : 10 Steps (with Pictures) - Instructables