Hello all I recently found a Grinder in the shape of a yoke. I have no information about it like age or date but I will get some hi resolution photos up here tomorrow. I have experience as an auto mechanic but none as a machinist. I decided to use this grinder as my first project because of the unique characteristics. But this isn't a precision machine to learn, it was free and it's simple. The perfect learning experiment, Lead (I assume by the grey color) babbit bearing, no simple press in ball bearings, no sire bob! There are oil cups on top, one of which is broken. All of which I've never used. The arbor shaft has square threads, not even acme threads! My friend and I are debating if we should turn the shaft down and get oversize bearings or turn a completely new shaft (without square threads). The top surface of the base is curved, preventing a bolt from securing down. The base was pretty uneven so I pulled out my dad's old files. I've already learned to file in one direction, how to position my arms and boy, how to clean files with a file car or piece of brass to clean between the teeth, and even how to pickle files. Already I've learned quite a lot.