Lesson 11: The X (Slotted Shapes lesson 12: Slotted X with Strap, lesson 13: Slotted X with Tabs.
My top choice for a book about designing sliceforms is John Sharp's Surfaces: Explorations with Sliceforms. .Lesson 5: pc optimizer & reg cleaner Box Tabs and Slots, lesson 6: V-Fold Tabs and Slots, lesson 7: Pop Up Words.Last updated: 10/22/2016 by Carol Full Disclosure: I received no compensation from any of these authors or publishers, nor any complementary review titles.How to Make Super Pop-Ups (or any of her pop up instruction books) by Joan Irvine: from Amazon or Book Depository.My third go-to book, Making Mechanical Cards by Sheila Sturrock, is not technically all about pop ups, but I believe most people do not really care about the distinction between "pop up cards" and "mechanical cards." Sturrock's book includes designs I have not seen elsewhere.A series of lessons to help you learn the basic mechanisms of pop up card and pop up book construction.Lesson 23: Tabletop Floating on I-Beams, the Best Instruction Books for Pop Ups.The Art of Paper Folding for Pop Up by Miyuki Yoshida: from Amazon.You will be buying (or getting for free!) a PDF file which includes the pop-up pattern with all the cut and fold lines and instructions on how to make pop-up cards yourself.If you already have these four, my next purchases would come from this list (some are out-of-print).This is required for tax purposes.You Won't See Me at the Anchor Inn by Susan Collard, 2010.Paper Engineering Pop Ups for Dummies by Rob Ives: from Amazon or Book Depository.