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A lock rotor will high ampage will a lot higher than running amps. Now the heat on outside of motor of will be to hot to touch. A temperature probe inside now to costly to install. You can only next best install on outside and use lower temperature for maximum on dial . Dave

It would be better to be in hot-spot within the core. But that is not option so do next best thing. Place on outside and use a lower temperature for max. At this point the bub is less than ½" of aluminum and steel from coil. Dave

Some types of motor protection works on the temperature of motor. It is a thermostat that turn off the motor when gets to hot It is one best protection but cost more than other. Dave

This what order a thermometer for my mini lathe motor. Most motors on mini lathes are DC and can run at low speed for a long time. The cooling fan is not turning very fast The advantage is I see the temperature rising and let lathe run higher speed to cool the motor down . All the other ways...

I agree I think to simple but works the best Dave

I like your chart on slow blow fuses 24VDC 150W 6.25 amps. That gives a over load of 250% 15.625 amps for 10 seconds before blowing...

Welcome to the group Dave

The first time foam type casting was in 1976. It work great but did have cost. I think where foam would be a big winner in castings like lathe beds and milling main casting. Use a chemical bonded sand. I did see a cast iron foundry in 1970's where did machine tool casting. The only sand...

The motor on the micro lathe is 24 Volts DC , 150Watts and 6¼ amps. They make a time delay fuse 6¼ amps. A time delay fuse will easily go over 5 time the rated amps for start and stalking. There is a graph on the overload amps. The other is a cooling fan for low speed . This is because the...

Welcome to the group Dave

Last year I did design and build. It was a VTVM something I always want . It start with the design starting in November of 2022 and finished in around June of 2023. I found it helpful on doing something I had not done for long time. They had no builder's log witch would have berm better for...

This a simple circuit A resistor for protection of motor. Next current limiting. Can be as simple a slow blow fuse sized for motor it is Old tech . They do make motor controllers with adjustable current limiting costly. This tech is used on garage doors for safety. I like the time delay fuse...

++++++++++++++++++++++++++++++++++++++++++++++++ Here a screen shot First selected the cells then merge the cells Then right click and select boarders Sounds great for the OEM to read. I wound never use that part.

Welcome to the group Dave

Just remember Chemo brain I log tomorrow had medical today.. Dave

Welcome to the group Dave

I joined Facebook when it just small group now I am one of oldest members and almost never post. I like what you said { a vintage "Free Flow" wood stove}. Dave

Thd good news I have Librere Office in my computer. I used Excel for 20 years. But have Librere Office too. There commands are little different so I boot computer tomorrow. On my phone tonight. Dave

That is easy to do Having Easter and will give more detail tomorrow. It is just right How new is your excel or some other brand? Dave

I agree It looks like the full size Dave