Keep the roll all together on the ground and feed the thermal paper in again to print upside-down on the other margin! Good times. Saw your old calculator video

Keep the roll all together on the ground and feed the thermal paper in again to print upside-down on the other margin! Good times. Saw your old calculator video with the 'sonic spiral memory'. I had NO IDEA such a thing existed! There is great value in the doggedly determined engineering of yesteryear, and there are some among the young who continue to carry the torch. Check this out if you have not seen it, Apollo Guidance Computer Restoration https://www.youtube.com/playlist?list=PL-_93BVApb59FWrLZfdlisi_x7-Ut_-w7 https://www.youtube.com/playlist?list=PL-_93BVApb59FWrLZfdli...