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parts came out with wrong dimension

Discussion in 'CNC Mills/Routers' started by andreashalim, Mar 3, 2019.

  1. andreashalim

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    Workbee user here. so i tried making this part with my cnc router. I designed it with fusion 360. it was made with 2 separate contouring operation. one for the inside circle, and the other one for outside profile
    hario_hario_body_Component2 v2.png


    however, the parts came out like this
    IMG_20190303_203930.jpg

    The circle was not in the middle. i already zeroed my machine, zeroed my part, checked my WCS( Work Coordinate System), and run simulation in fusion, everything looks fine.


    i thought there's mechanical issue with my machine. i checked everything, and its fine.
    so i tried instead of separating the two operation, i combine them in one operation.
    the part look like this
    IMG_20190303_203958.jpg





    i hope someone will help me explain this problem



    thank you very much
     
    #1 andreashalim, Mar 3, 2019
    Last edited: Mar 3, 2019
  2. Colin Mccourt

    Colin Mccourt Journeyman
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    What controller board are you using? I'm far from being able to give advice on this but if you've checked everything else and all looks fine maybe your using the wrong gCode post processor...As I say I'm only a novice and I'm sure someone better equipped to answer your query will be along shortly possibly one for @Alex Chambers or @Colin Hart as they are both using Fusion.
     
  3. Giarc

    Giarc Master
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    Save the sketch as a .dxf in Fusion 360. Then try using OpenBuilds CAM and see if the issue persists. I used to use Fusion 360 for generating the CAM for my designs, but found saving it as a .dxf and using Estlcam was quicker and easier for me. OpenBuilds CAM may be similar.
     
  4. Alex Chambers

    Alex Chambers Master
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    Hi @andreashalim, could you post your Fusion 360 file (the one with two separate toolpaths) here.
    Alex.
     
  5. andreashalim

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    @Alex Chambers here's the file that contain two separate toolpath

    @Giarc thank you for your suggestion. i'll try that

    @Colin Mccourt im using arduino uno as my controller.
     

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  6. andreashalim

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    i just found out my workpiece move slightly during milling process and cause this problem.
    so the problems has been found!

    thank you very much for all the replies
     
  7. Alex Chambers

    Alex Chambers Master
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    Pleased to hear that it was nothing complicated @andreashalim. Invest in some hold-downs? :D if you have access to a 3d printer I can give you some links to a variety. :)
    Alex.
     
  8. David the swarfer

    David the swarfer OpenBuilds Team
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    glad that you found the problem.
    Here is a good solution to holding work, I use it all the time.
     
    Alex Chambers likes this.
  9. andreashalim

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    @Alex Chambers yes, i have 3d printer. that would be great if you can share the links|
    @David the swarfer i'll check out the youtube videos. thank you very much
     
  10. Alex Chambers

    Alex Chambers Master
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