One of our favorite retro hardware enthusiasts, [CuriousMarc], is back with the outstanding tale of preserving Apollo Program software, and building a core rope reader from scratch to do it.

A little arm moves back and forth, guiding the yarn so it winds evenly onto the spool.This is core yarn and will be used to make other rope. Now, dozens of spools of nylon fiber unwind at the same ...

His quest was to create a unique drum machine, inspired by a Soviet auto-dialer that used rope core memory for number storage. Rope memory is the read-only sibling to magnetic core memory ...

Make an effort to land softly with ... high to give you the air time to swing the rope around twice. Focus on your form, squeezing your core and making your swing fast and powerful.