Model number five in my series of free machine shop instructions is this big cylindrical grinder. It has a movable guard and posable indicator arm. There’s just one fiddly steering wheel to prise apart on this one, plus two of the larger wheels.

Train Guy back on modelling duties, with a bonus big-boy tap wrench

This was actually the third model I designed but it was stuck at the back of my engine shed and I nearly forgot about it! As always, there’s a gallery of images below or you can download a full PDF and parts list.