How Were the Blocks Cut So Accurately, Achieving Joints Thinner Than a Credit Card?

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The joints of the Great Pyramid’s casing stones are thinner than a standard credit card. How was this achieved, and how meticulous was this work?

Dig Labs Collaborative ResearchHelp us investigate these questions further. Review the current state of research surrounding this topic, suggest new sources, or share your expertise. Every contribution helps.
Dig Labs Collaborative ResearchHelp us investigate these questions further. Review the current state of research surrounding this topic, suggest new sources, or share your expertise. Every contribution helps.
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Introduction

The joints of the Great Pyramid’s casing stones average only 0.5 millimetres (0.020 inches) wide, thinner than a standard credit card. How was this achieved, and how meticulous was this work?