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  1. 14-07-2018 #6
    Clive S's Avatar
    Lives in Marple Stockport, United Kingdom.
    Clive S
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    Quote Originally Posted by Millatime16 View Post
    Hi.

    I am cutting furniture out of 12mm MDF using Straight 6mm 2 flute carbide bits.

    I usually take 4 passes (3mm each). The bits last on average about 80 mins before sounding 'wrong' and emitting burning smell.


    Is this about right? or should they last longer. I have tried various ones from UK and from China, but they are all about the same.


    Just wanted to know if this sounded normal, or wildly out.
    What is the power of your spindle and what feeds and speed are you using. I have been cutting 9mm mdf with a 3mm alibond on top and using a single flute 4mm carbide with 6.5mm doc and about 3.5 mtr/min without any problems spindle speed 2200rpm 2.2 kW I think we did about 15 8x4 sheet with many profiles within in one day

    Edit these are the bits :- https://www.ebay.co.uk/itm/4mm-SOLID...1e30%7Ciid%3A1
    Last edited by Clive S; 15-07-2018 at 07:59 AM.
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