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  1. 11-09-2011 #11
    Jonathan's Avatar
    Lives in Leicester (Home) or Nottingham University (2nd Home), United Kingdom.
    Jonathan
    Last Activity: 05-04-2020 Forum Superstar, has done so much to help others, they deserve a medal. Has been a member for 9-10 years. Has a total post count of 3,571. Received thanks 325 times, giving thanks to others 8 times. Referred 1 members to the community.
    You've just described exactly all of the things I've tried (except mister, not tried that) and the same effects!
    I agree compressed air is great. So far I've done that just by holding the air gun close and following it which works reasonably well. The main problem is heat getting into the part I am machining - as soon as that gets hot say bye bye to the finish/cutter. Compressed air doesn't seem to be effective in that situation, you need liquid cooling. On the parts I just posted this wasn't an issue as they were cut from a 12"x3/4"x2000mm bar which nicely conducted the heat away.

    One day I'll attach hoses for coolant and air...

    It depends a lot on the grade of the aluminium...6061 is the best I've used so far.

    Going to buy some more 6mm 1fl cutters now.
    Last edited by Jonathan; 11-09-2011 at 09:51 PM.
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