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  1. 07-02-2018 #1
    foto-boss's Avatar
    Lives in Ekaterinburg, Russian Federation.
    foto-boss
    Last Activity: 09-04-2018 Has been a member for 7-8 years. Has a total post count of 32. Received thanks 5 times, giving thanks to others 1 times.
    https://www.youtube.com/channel/UCtX...sLw8NNcDNI2u1g
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  2. 08-02-2018 #2
    magicniner's Avatar
    Lives in Rotherham, United Kingdom.
    magicniner
    Last Activity: 1 Week Ago Forum Superstar, has done so much to help others, they deserve a medal. Has a total post count of 2,025. Received thanks 231 times, giving thanks to others 45 times.
    If I leave it several months without use my little CNC mill spindle motor will make a similar noise until it warms up if I run it above 5Krpm, it seems to be electro-mechanical noise generated when the motor slips a little too much and the VFD tries to sort it out.
    You think that's too expensive? You're not a Model Engineer are you? :D
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