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Thread: Rough Cutting

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  1. 09-02-2015, 04:10 AM #1
    zeaksmith
    zeaksmith is offline Registered
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    Question Rough Cutting

    Hi All,

    I am new here and this is my very first time using a CNC machine. I am having some issues with the roughness of the cut.

    I am trying to cut letters from a 12mm board using a 4mm drill, travelling 20mm/sec doing to passes of 6mm and the spin rate is full.

    Can anyone tell me where I am going wrong? I have attached a photo of the cut.

    Thanks in advance

    Zeak
    PS. Not in Australia but close by in Vanuatu
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  2. 09-02-2015, 06:22 AM #2
    bhurts
    bhurts is offline Registered
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    Re: Rough Cutting

    Are you really using a drill bit? If so you shouldn't be. If your using a router bit I'm guessing it's a up spiral. Instead try a down spiral or compression spiral bit. It will get rid of the frayed and chipped top edge.

    Ben
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  3. 09-02-2015, 06:59 AM #3
    zeaksmith
    zeaksmith is offline Registered
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    Re: Rough Cutting

    Hi Ben, thanks for the advice, yes your correct I am not using a drill bit, it is a spiral up bit. I will try and get my hand on a down or compression bit see how that looks.

    is there any good place to order on-line in OZ?

    Zeak
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