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  1. 10th Feb 2019, 08:10 PM #1
    RustyArc
    RustyArc is offline Diamond Member
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    Default Do I need to run coolant?

    My new lathe has a coolant system, and the shop gave me a free bag of coolant concentrate, but I'm not sure when or even if I need to run coolant?

    I spray a bit of WD-40 on to the job when turning aluminium to stop it sticking to the carbide insert, and use cutting fluid when drilling steel with HSS drill bits, but do I need coolant when using carbide inserts on steel?
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  2. 10th Feb 2019, 08:16 PM #2
    elanjacobs
    elanjacobs is offline Gear expert in training
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    Coolant will prolong the life of your inserts. You don't need to, but it's a good idea where practical.
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  3. 10th Feb 2019, 08:57 PM #3
    bob ward
    bob ward is offline Diamond Member
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    I don't, YMMV
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  4. 10th Feb 2019, 09:23 PM #4
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    jatt
    jatt is offline Always within 10 paces from nearest stubby holder
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    Coolant will prolong the life of your inserts. You don't
    need
    to, but it's a good idea where practical.
    Cant argue with that.

    Me, well just drip a bit of light oil on the cutting tip as I go. Also have the air nozzle handy.
    Frisky wife, happy life. ​Then I woke up. Oh well it was fun while it lasted.
    From an early age my father taught me to wear welding gloves . "Its not to protect your hands son, its to put out the fire when u set yourself alight".
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  5. 10th Feb 2019, 09:39 PM #5
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    BaronJ
    BaronJ is offline Most Valued Member
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    Hi Guys,

    I usually use diesel/kerosene on aluminium and Temaxol, which is basically lard, sulphur and white lead, for steel, brushed on or squirt bottle for diesel. Though I do use WD40 on the circular saw when cutting aluminium. I used to have a wax stick for this.
    Best Regards:
    Baron J.
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  6. 10th Feb 2019, 10:16 PM #6
    pipeclay
    pipeclay is offline Most Valued Member
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    When the time is right you will know to use coolant.
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