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IndustryArena Forum > CAM Software > Dolphin CAD/CAM > Why is only one contour smaller?
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  1. #1
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    Aug 2008
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    294

    Why is only one contour smaller?

    First time machining a part, and for some odd reason only one contour machined smaller, whereas everything else machined right on size.

    The 2 1/2" diameter hole came out .080 smaller (2.420")
    I have no clue if it's a glitch in the post processor or something I did.
    The .DXF drawing was done with OnShape, and the G-code generated with Dolphin CAD/CAM ( my first time using the CAM part)

    I've enclosed the original drawing, as well as the first lines of the .TAP file because the 2 1/2" hole is the first to be cut ( I couldn't post the whole program)

    Edit; I notice it's difficult to see the writing in the second picture, but line 25 looks like this;

    N25X-1.085I-1.0075J0.0

    I'm no G-code expert, but to me, that " X-1.085 " seems to be the issue. ( 2 times 1.085 plust my .250" diameter cutter equals 4.20 )
    Shouldn't that be X-1.125" ??

    Thanks for any help.
    Dan
    The one that dies with the most tools, WINS !!
    www.dantechfabricating.com

  2. #2
    Registered andre-dolphin's Avatar
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    Feb 2007
    Posts
    375

    Re: Why is only one contour smaller?

    Hello Dan,

    I think this is something to do with an approach move or arc splitting.

    Please send an email to support@dolphincadcam.com and attach the .cnc please and I'll take a look.

    Regards
    Andre

  3. #3
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    Aug 2008
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    294

    Re: Why is only one contour smaller?

    Thank-you Andre !
    The one that dies with the most tools, WINS !!
    www.dantechfabricating.com

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