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  1. 13-01-2015 #29
    mekanik's Avatar
    Lives in Barrow in Furness, United Kingdom.
    mekanik
    Last Activity: 3 Days Ago Has a total post count of 801. Received thanks 101 times, giving thanks to others 176 times.
    Suesi
    Dia is an abreviation for diameter ie 6mm the radius is formed where the diameter intersects the square section (like head of a bolt) when a bolt is torqued it actually increases slightly in length and loads the assembly,if there is a sharp junction a crack can propergate in that area especially if the item was subject to and impact. The radius helps to distribute the load, some of the guys on the forum have the software that can show stress analysis.
    As for the cutting tool,NO there is no time when a blunt tool is preferable to a sharp one (to the best of my knowledge), in this case you would just produce a slight radius on the tip of the tool still maintaining the correct clearance angles. hope that makes some sort of sense.
    Regards
    Mike
    Last edited by mekanik; 13-01-2015 at 12:15 AM.
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