File:Firedoor ring mounting Charles Pipes.jpg: Revision history

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8 March 2022

  • curprev 14:0814:08, 8 March 2022Dnevil talk contribs 208 bytes +208 This fire door frame was fitted with 5-40 countersunk machine screws. Photo by Charlie Pipes. From https://www.chaski.org/homemachinist/viewtopic.php?f=45&t=95721&p=440382&hilit=backhead#p440382