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  • How do I choose a bit? What Feeds and Speeds should I use?

    Feeds and Speeds

    Here is the best info we have here in support. This is one of the hardest things for people to get right as it is a learned skill to come up with and adjust feeds/speeds. There is no set in stone number for any project:

    The info I am providing is on feeds/speeds and calculating them using chipload. I am including some document links and want to throw in a couple of reminders that chip-load values are key, so finding you bits chipload from the manufacturer and then finding the federate plus 12k-18k rpm that gets you the chipload:

    A good place to start –http://www.woodguide.org/files/2014/…bit_basics.pdf

    A good reminder to use chipload calculations –http://www.talkshopbot.com/forum/sho…-find-the-data

    And an extra reminder that chiploads are based on a 1x full depth cut. 1x full depth is the diameter of the bit. So a ¼” bit has a 1x full depth of cut of ¼”.


    ShopBot Tutorials
    See feeds and speeds category

    Feeds/Speeds (videos)
    Tips for Cutting Aluminum
    Cutting Acrylic
    Tool Database and Bit Selection
    Plywood
    Plastics
    For milling (but the techniques are very similar)


    Documents (PDF’s)
    Selecting the Right Bit/Feeds and Speeds Charts
    Feeds & Speeds Quick Reference
    Feeds & Speeds Plastics
    Tips for Cutting Aluminum