Posts tagged ‘3D Printing’

This Is Where I Draw The Line

So I’ve had a pen plotter for quite a while now. It has shown up a few years back in a post on this site, where I used it for its intended purpose—recording X–Y curves. This plotter is quite a beast, it’s big (up to DIN A3) and heavy, and it’s unlike the majority of vintage plotters you’ll see people using online. This HP 7045A is fully analogue, which means it takes an X voltage and a Y voltage and directly controls the axis motors with analogue servo loops. In fact, it’s more correctly referred to as a recorder, rather than a plotter, since its purpose is to record measurement charts.