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Cutting too deep.

Discussion in 'SketchUcam Bugs' started by taylex, Feb 28, 2011.

  1. taylex

    taylex New Member

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    Hi,

    Not long had out over head gantry cnc installed and i'm hoping to use your plug into to create out oval ribs we cut out of 15mm mdf.

    The problem i am having is: I set the material to 15mm and a multipass of 7.5 but i'm getting 3 passes with the 3rd cutting around 5mm into my bed below. Is it something i am doing wrong??

    cheers
    karl
     
    taylex, Feb 28, 2011
    #1
  2. Jnida63

    Jnida63 Member

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    Set your parameters that the red arrow shows to %100, %140 is for that original MKI, MKII that the bit comes up from the bottom causing it to cut %140 further than the script calls for

    Attached files [​IMG]
     
    Jnida63, Feb 28, 2011
    #2
  3. rcav8r

    rcav8r Moderator Staff Member

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    Hi Karl, and welcome to the forum.

    Within the setup of the Phlat Scrpt, check for Overcut (or something like that). I forget what it is called as I don't have this installed where I am now. Basically it is there to make up the difference in wavy material. It is usually set to 120% (I think) so if your material is 15MM it will actually go past it 3mm, or 18mm. You'll want to set this to 100% to make it travel 15mm.

    I use this to my advantage so I make sure it makes it the whole way through, and still allows me to set the Z home high enough so it doesn't scrape the material when jogging. But I'm running a PP so a cut too deep really isn't a problem. :)
     
    rcav8r, Feb 28, 2011
    #3
  4. taylex

    taylex New Member

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    Cheers for the promt replys.

    Thats sorted now thankyou.

    next problem; as i have been testing i have been drawing a square, as i now have many many squares i thought i'd try a triangle however it outputs as a circle, well actually more of an egg.

    any thoughts??

    ps liking the plus thus far.
     
    taylex, Feb 28, 2011
    #4
  5. rcav8r

    rcav8r Moderator Staff Member

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    Dang cross-post.
    Not sure I've see what your describing. Can you post a screen shot of the SU screen, and a screen shot the CNC output?
     
    rcav8r, Feb 28, 2011
    #5
  6. taylex

    taylex New Member

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    taylex, Feb 28, 2011
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  7. taylex

    taylex New Member

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    taylex, Feb 28, 2011
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  8. rcav8r

    rcav8r Moderator Staff Member

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    Hard to see from the pics, but I don't see "cut styles" (for lack of a better term) defined. That is Inside, or outside cuts. Did you apply those to the tri-angle?
    Just select the tool from the PhlatScript toolbar, and click on the closed shape (face) in SU. Also hard to tell, but is the Triangle a face in SU? It has to be for the script to work.

    Not sure how you got anything at all, let alone all those shapes.
     
    rcav8r, Feb 28, 2011
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  9. kyyu

    kyyu Active Member

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    Don't use polygons, as circles and polygons are ArcCurve as far as Sketchup is concerned. You can either explode the polygon into edges or weld it into a curve. Regular curves are ok, and won't be mistaken for a circle.

    -Kwok
     
    kyyu, Feb 28, 2011
    #9

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