Category Cardstock & Construction

Cardstock & Construction

How Humidity Changes Paper Card Thickness and Feel

Close-up of two stacks of blank rounded-corner paper cards on a dark workbench, with a metal micrometer positioned against the edge of the left stack and a small clear container in the background.

Humidity can change a paper card’s dimensions, stiffness, surface behavior and curl. Learn why perceived thickness is not the same as caliper and how to compare cards under controlled conditions.

Bryce
October 11, 2026

Cardstock & Construction

Why Two 300 GSM Cardstocks Can Feel Completely Different

Two stacks of plain rounded-corner white cards of visibly different thickness sit on a gray work surface, with a metal micrometer and additional paper stacks behind them.

GSM measures a sheet’s mass per area, not its thickness, rigidity or surface character. Here is what actually makes equal-weight cardstocks feel different.

Bryce
October 3, 2026

Cardstock & Construction

Paperboard Bulk Explained: Why Thickness Is Not the Same as Weight

Macro workshop view of several stacks of blank rounded-corner paperboard cards on a gray surface, with a metal caliper positioned around one stack.

GSM measures mass per area, while caliper measures thickness. Paperboard bulk connects the two, but neither measurement alone predicts stiffness, feel or finished-card performance.

Bryce
October 2, 2026