recommended bit for cutting 3mm carbon fiber sheets

New Home Forum Mostly Printed CNC – MPCNC Troubleshooting – MPCNC recommended bit for cutting 3mm carbon fiber sheets

This topic contains 1 reply, has 2 voices, and was last updated by Profile photo of Jason Jason 10 months ago.

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  • #12782
    Profile photo of David
    David
    Participant

    Hey guys,

    Didn’t know if anyone could recommend a specific bit (reasonably priced) for cutting 3mm carbon fiber sheets. I’m currently using 1/8″ wood/laminate bits on my dewalt 660 spindle with wood. I’ve been searching and I guess a 1/8″ carbide bit would be the way to go? Any recommendations or direct links that someone could point me to based on their experience? Thanks!

    #12793
    Profile photo of Jason
    Jason
    Participant

    I have a friend who’s been cutting CF sheets to make multirotor frames for about two years. He swears by these bits:
    http://m.ebay.com/itm/381380214643?_mwBanner=1

    He also said:

    [quote]
    Cut settings that work great for me, although not the fastest is .0175″ cut depth per pass, 10″ min cut speed, 5″ min plunge speed with a .2″ safety height. The bits wear out pretty fast so don’t expect to get more than a few frame pieces cut at a time if its CF. Due to this I always drill all of my holes as the first operation then go back with a round diamond file in a drill to enlarge the holes to the right size. I use a piece of masking tape around the file to gauge the depth I need to go to.
    [/quote]

    Note – he’s using a shapeoko not a MPCNC.

    I plan on giving it a try soon I still need a better spindle, just been using my old dremel to play around for now but will be picking up a 660 soon. Also I need to buy some CF sheet 😀

    I did order these bits: http://www.ebay.com/itm/151077631029?_trksid=p2057872.m2749.l2649&ssPageName=STRK%3AMEBIDX%3AIT They’re a bit cheaper but also a bit smaller diameter – so more likely to get broken. But for me to play around with the price was too good to pass up. (I was just looking to buy some O-Flue endmills for cutting lexan and acrylic but tossed those in since it saved me money on shipping vs. buying them later.)

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