Theory 165/Timber drying/Ratio lens
Distortion Is Radial Against Tangential
The claim
Distortion is set by the ratio of radial to tangential shrinkage, so species with a high ratio warp predictably.
01Mechanism
Different shrinkage along grain directions produces differential movement; the ratio determines the distortion pattern.
02Prediction
Warp should track the ratio.
03Refutation
Warp tracking total shrinkage would remove anisotropy.