Standard Vs Fine Pole Permanent Mag Chuck

One place I worked at if you launched a part it went out a window into the wooded area next door. Didn't understand why the boss wanted the windows open til I launched a part. He would go outside to find the part and have a cigarette while he was out there.
 
Throwing a part is nowhere near as bad as jamming a part between the spindle and table and damaging the machine itself
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Depends. Launching a largish pointy piece of steel and killing someone is considered bad also. A machine can easily be replaced or fixed. Perspective is a *****.
 
A "small part" usually defined as one that crosses less than 5 poles of the magnetic chuck. If the part is less than 1/4" thick you may get away with it spanning only 3 poles.
To grind "small parts" on a wide pole chuck you can use "magnetic" parallels or magnetic V blocks.

https://www.google.com/?gws_rd=ssl#q=magnetic+chuck+blocks&tbm=shop

The blocks aren't actually magnetic, but are rather laminated blocks that allow magnetic fields to pass through them to hold the part. The spacing of the laminations allows more fields to be generated, however they are somewhat weaker.
 
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