Why Cards Warp

Why Cards Warp explains the materials science behind card warping, bending, pressing, and creasing. All of it comes down to one idea from engineering: the stress-strain curve. It explains why some warps come and go with the weather, why others can be pressed out permanently, and why a crease can be improved but never truly erased.

This page is the theory underneath Pressing and Flattening, Heat Press, Crease Removal, and Humidity Management. Read it once and those pages make more sense. If you only want to know whether a specific warp is fixable, jump to Quick Diagnosis.

Also on this page
  • Overview
  • The Stress-Strain Curve in Plain Terms
  • Elastic Zone
  • Plastic Zone
  • Fracture
  • Heat and Humidity Change the Curve Itself
  • Holo Cards Are Laminates, and the Layers Disagree
  • Types of Warps
  • Humidity Curl (Elastic, Temporary)
  • Set Warp (Plastic, Permanent but Fixable)
  • Diagonal or Twisted Warp (Case by Case)
  • Creases, Cracks, and Tears (Fracture, Permanent)
MEMBER LIBRARY
Read the rest of Why Cards Warp
This page is part of the Card Conservation Wiki member library — the working reference behind The Cardboard Alchemists. Technique pages with tested settings, the Card Sensitivity Database, logged incidents with the exact parameters that caused them, and community experiments you will not find written down anywhere else.
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