How to cut HSS tools?

[f350ca]

The machine shop is my refuge in the hot weather. The building is two stories, cabinet shop above and surrounded by trees. I insulated the floor between thinking i may want to only heat one floor in the winter. The walls are 2x6 then strapped horizontally on the outside with 2 inches of fibreglass there as well. The strapping breaks the thermal bridging. Its been in the 30's here all week, maybe not hot to southern standards but warm enough, the shop was 20 Celsius today, 68 Fahrenheit for our southern friends. Feels cold when you first go in stays that way all summer. The only drawback is I can't open the big doors in this weather, if I do the cold machinery is instantly covered in condensation when the warm moist air comes in.