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IndustryArena Forum > Hobby Projects > Hobby Discussion > Chatter on my end mill
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  1. #1
    Join Date
    Jul 2016
    Posts
    14

    Chatter on my end mill

    Hi, I recently built my own cartesian style CNC router with 12mm plywood parts. Its mostly an OX style CNC with delrin wheels for linear motion on V-slots. I can mill 6061 aluminium on this but I see a lot of chatter. Here is a video where I'm milling a 5mm hole and as you can see there is a lot of vibration and an awful racket as the mill goes down the material (look at the mist nozzle. Why is this?

    CAM was done in Fusion 360. This was a boring operation with a 0.1mm step pitch. Material thickness is 6.7mm. Feed was 260mm/min. The tool is a 4mm 2 flute end mill.

    Could this probably be because of the delrin wheel based axes? Would replacing them with a linear shaft and blocks help? Perhaps I'm doing the wrong operation?


  2. #2
    Join Date
    Mar 2008
    Posts
    683

    Re: Chatter on my end mill

    There are so many things. Check your backlash first. Then get out the indicator and find out where the slop is coming from. Without using your indicator and 'wiggling' all the joints it is hard to say.

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