( Tom Stanton
2020 youTUBE video    10:15 )

Flywheel Trebuchet

-----------------------------------
( Tom Stanton
2018 youTUBE video    14:59 )

Optimising a Trebuchet

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( MrGear
2016 youTUBE video    1:31 )

How to make a TRIP-WIRE ALARM

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( Pajen DIY
2021 youTUBE video    5:49 )

DIY Slingshot - Easy way to Make a Powerful Slingshot Rifle

-----------------------------------
( Make it like new
2022 youTUBE video    10:19 )

How to make a Crossbow (Step by Step)

-----------------------------------
( NATIONAL GEOGRAPHIC
2013 youTUBE video    3:02 )

Armored for Armageddon

-----------------------------------
( NATIONAL GEOGRAPHIC
2013 youTUBE video    3:29 )

Sniper School

-----------------------------------
( NATIONAL GEOGRAPHIC
2013 youTUBE video    4:36 )

Selling Survival: Episode 1: Defense

-----------------------------------
( NATIONAL GEOGRAPHIC
2014 youTUBE video    3:30 )

Selling Survival: Episode 14: Protection

-----------------------------------
( NATIONAL GEOGRAPHIC
2013 youTUBE video    2:42 )

Selling Survival: Episode 13: Knife Fighting


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