Is sustaining or rapid fire important, I guess weight isn't as important co-axially mounted which makes me wonder why water cooled machine guns like the vickers were abandoned for air cooled Besa and Browning alternatives. I guess turret or cupola mounted machine guns are better light (with the exception of the Browning M2 HB .50 cal. MG). If you were designing a WW2 Tank what type,how many and where you would mount them and why. Cheers John.
There is lots of information on this on the Internet and in books about machining. Google search shows over a million links. A few of the top of my head: Eye guard at all times when working. No loose clothing, long hair, neck chains. If not familiar with item or operation, ask for assistance. Chuck key out of the chuck, hopefully in a holder that enables the power switch when it is put there. Emergency power off or stop switch present, handy, and familiar. A fully planned operation of all steps in proper order before beginning. Hopefully a paper print or CNC or computer information or other documentation present. Dimensions and tolerences understood fully. Rotate chuck by hand to test clearances with tool carriers, lathe bed at extremes of machining operation before power on. Gear change handles and gears fully locked and engaged. Tool locking screws and carriage's tool carrier fully tightened. Tool height checked. Tool shape, relief, and sharpness proper for the job. Cross slide feed dial zeroed or reading noted when operation begun. Feed rate and depth of cut that is best for material and the operation.
Click on the source link I posted below. I'm too tired to think.
