Power feed transformer wiring

When I was a student I was required(!) to attend several weeks training at the MSC training centres. One of the instructors showed me a brand new state of the art milling machine and I asked him what it could do. We got through several large end mills whilst experimenting to find out. With high coolant flow and a brand new cutter of something around 1", we were able to take what seemed to me to be a ridiculous depth of cut - something over an inch in one go with a fair rate of feed.

The swarf made a magical crisping noise and the progress was something to behold. But as soon as the cutting edge tipped over the edge ie got a bit too hot, things would get lairy very quickly. That meant the entire cutter turning bright red within seconds. I guess flood cooling would have been appropriate. I was certainly fairly obvious when to stop the machine.

I enjoyed my time at the skill centres. In one I skimmed a cylinder head on a vertical milling machine at one (Bradford) and at the other (Leeds) I skimmed another cylinder head on a grinding machine. Possibly not the ideal machine for the job but I got something useful out of the process. This was followed up by 2 weeks of welding training - nowhere near enough but at least it provoked an enduring interest. The learning process continues over 30 years later...

Muzzer