Pressbrake Rear Crossmember!

raywin said:

Felt a bit cheeky suggesting it, but some drills are easily reversed by accident, and you know what they say if you haven't made a mistake its because you haven't made anything.
at the risk of starting things off again, easy to work out the correct drilling speed of HSS drills the cutting speed should be 80 - 100 ft per min max
So look at the diameter of the drill bit, multiply by 3.142 ( 3 will do) multiply by the RPM of the drill machine and that would give the speed in MM/ min, divide that by 305 and you will have ft per min.

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