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[cijuanni]

Depends on what your time is worth.

I would rather spend $2000 or more on a nice running machine with tooling, cutters etc, and usable today!,,,...

[cijuanni]

That is the earlier style head, to late 40s?? The later ones had a football shape.

It may not need to be 'rebuilt', but surely a 80 year...

[cijuanni]

I have a #12.
I had to make a new spindle from 4140, have it heat treated and ground, new bearings etc.... NMTB 30 taper.
Because the existing...

[cijuanni]

No tooling and 5V is a bit oddball taper, no arbors or arbor support.
I would pass.

[cijuanni]

True, but I would rather get it later after the peak, not when hospitals etc are swamped and unprepared.
Hopefully a year or 2 later if medical...

[cijuanni]

Maybe, but this was a 'maching' topic,,,,, which I have read the OP several times and don't know what to make of it. lol...

[cijuanni]

"The most significant characteristic that differs between a "motor" oil and a "hydraulic" oil are the emulsifiers. In most hydraulic...

[cijuanni]

Going faster with the same load will require more volume at the same pressure, more pressure at the same volume or some combo of each.
The electric...

[cijuanni]

Yep, sandblasting gets off all the scale and gives the surface the ideal roughness for the paint to bite into..
Wire wheeling and sanding just polishes...