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In this very special episode, we examine a fascinating object kindly sent to me by viewer Timothy Zotara: a box of No.3 Self-Soldering Jointing Sleeves. Developed for use by Special Operation Executive (SOE), Britain' WWII sabotage and subversion organization, these were designed to connect firing wires to explosive detonators, using a pyrotechnic charge to melt the integrated solder.

Footage of suafur-iron reaction from NileRed's video: https://www.youtube.com/watch?v=WNXWnhRjN6o&t=1s&pp=ygUUc3VsZnVyIGlyb24gcmVhY3Rpb24%3D

Blasting Machines video: https://www.youtube.com/watch?v=GLqzTsLN2_Q&pp=ygUcYmxhc3RpbmcgbWFjaGluZXMgLSBub3QganVzdA%3D%3D

SOURCES:
Dear, Ian, Sabotage and Subversion: the SOE and OSS at War, Cassell Military Paperbacks, London, 1996
Ladd, James, Clandestine Warfare: Weapons and Equipment of the SOE and OSS, Sterling Publishing Company, 1988
https://filthy13.weebly.com/demolition-kit.html
https://hackaday.com/2020/06/19/strike-a-solder-joint-behind-enemy-lines/
https://www.bulletpicker.com/pdf/SRD%20Technical%20Handbook.pdf
https://training.nwcg.gov/classes/s130/508%20Files/071231_s130_m7_508.pdf
https://worldwarwonders.co.uk/product/ww2-soe-oss-issue-sleeves-jointing-self-soldering-no3/