---ANCIENT STONE CRAFT TECHNOLOGY: What Materials Did They Use? (44min - 2023)
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In ancient times, how did craftspeople carve and cut stones to make the amazing statuary and architecture that we see around us? In this video, we look at experiments to show what could and couldn't be done. 

CONTENTS
0:00 DNA test
03:40 Introduction
05:54 Stone Tools Could Carve Limestone
10:17 Copper Tools Could Carve Limestone
14:10 Iron Tools Could Carve Granite
21:00 Stone Tools Could Carve Granite
30:51 Stone Abrasives Could Carve Granite
35:22 Techniques and Hand-Powered Machines

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► REFERENCES
https://engineerexcel.com/hardness-vs-toughness
https://www.nde-ed.org/Physics/Materials/Mechanical/Toughness.xhtmlhttps://sci-hub.se/
https://doi.org/10.1007/978-94-007-3934-5_9176-2