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Tool Radius compensation G41 G42 G40

Discussion in 'General Talk' started by Søren Weitling, Oct 23, 2022.

  1. Søren Weitling

    Builder

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    Hello.
    In the wiki list for GBRL V 1.1 I can find the G40 for cancelation of compensation. How to compensate when not having G41 and G42
     
  2. Alex Chambers

    Alex Chambers Master
    Moderator Builder

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    I'm sure someone will correct me if I'm wrong, but I believe grbl ignores those G41, 42 codes?
    As far as I am aware you have to put the actual diameter of the bit into your cam software.
    Alex.
     
    #2 Alex Chambers, Oct 23, 2022
    Last edited: Oct 23, 2022
    Søren Weitling likes this.
  3. Søren Weitling

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    Thanks Alex
    Yes GBRL ignores this codes
     
  4. Peter Van Der Walt

    Peter Van Der Walt OpenBuilds Team
    Staff Member Moderator Builder Resident Builder

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    Many posts include Cancel Comp as a way of confirming its not using it. Grbl thus supports the command - rather than error out if it encounters a G40 it accepts it because rightly so it cancels (its nonexistant) compensation, then continues. This is valid and honors the gcodes intention

    It SHOULD error on G41 etc because it doesn't allow compensation, but G40 is valid because it matches what Grbl offers (no compensation)
     
    Søren Weitling likes this.
  5. Søren Weitling

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    Thanks Peter. Well noted
     
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