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  1. 15-08-2011 #1
    Robin Hewitt's Avatar
    Lives in Seaford, Sussex, United Kingdom.
    Robin Hewitt
    Last Activity: 1 Week Ago Has a total post count of 1,618. Received thanks 109 times, giving thanks to others 7 times. Is a beta tester for Machinists Network features. Referred 1 members to the community.
    Find a cheaper cutter :naughty:

    You want about 250-350 ft/min for aluminium. 432 ft/min is pushing it.

    I suspect you have clag building up on the tool edge, some alloys are worse than others. Get your magnifying glass out, does the finish become progressively icky before the tool break?
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  2. 15-08-2011 #2
    John S's Avatar
    Lives in Nottingham, England, United Kingdom.
    John S
    Last Activity: 23-09-2017 Has been a member for 9-10 years. Has a total post count of 2,073. Received thanks 141 times, giving thanks to others 45 times. Referred 1 members to the community.
    Quote Originally Posted by Robin Hewitt View Post
    Find a cheaper cutter :naughty:

    Try these

    http://www.ebay.co.uk/itm/10x1-8-Car...-/140548882570
    John S -
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  3. 15-08-2011 #3
    Robin Hewitt's Avatar
    Lives in Seaford, Sussex, United Kingdom.
    Robin Hewitt
    Last Activity: 1 Week Ago Has a total post count of 1,618. Received thanks 109 times, giving thanks to others 7 times. Is a beta tester for Machinists Network features. Referred 1 members to the community.
    Quote Originally Posted by John S View Post
    Try these

    I think I'd go for a stub length slot drill to engrave text. Anything to reduce flex in the system.
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