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Z axis issue - cutting too deep

Discussion in 'CNC Mills/Routers' started by ADAM FAIRHEAD HALL, Dec 30, 2022.

  1. ADAM FAIRHEAD HALL

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    Hello all,

    Thanks in advance for any help I get here, it’s really great to see folks sharing knowledge like this.

    I’m using a Workbee 1515, 1.5kW spindle & xPRO V5 controller run through Openbuilds Control. Or I will be if I can sort out the issue I’m having. Machine homes fine. I’m using a standard square XYZ touch probe. Probe sequence goes through fine. When I load up a job & run it everything’s good in the XY but it cuts around 5mm into the stock before it starts the actual cutting path.

    As an example I’ve created a basic model with just a couple of 2mm deep slots, and set 1mm stepdowns (6mm end mill) – with this run through Control it did stepdown in 1mm passes but just kept doing it right through the 12mm stock. I’ve posted that fusion model here – if anyone would like to check it out that’d be amazing.

    So either I’m not setting up the probe correctly or something’s not right in my Fusion setup?

    I do get this warning popup in Fusion at the end of generating gcode - I can't actually find the settings it's suggesting there - I'm just using the personal use version of Fusion - maybe that function is disabled? Screengrab hopefully pasted in below.

    upload_2022-12-31_0-45-51.jpeg

    Goes without saying I’m new to this but very keen to learn & start cutting stuff!

    Cheers,
    Adam
     

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    David the swarfer likes this.
  2. David the swarfer

    David the swarfer OpenBuilds Team
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    because you did not set the bottom height to be the bottom of the pockets you selected (the selected contours in this case).
    2D cutting strategies are not model aware, you have to tell them everything they need to know, the contour selection gives them a shape, then you give them depths in the 'heights' tab.
     

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  3. David the swarfer

    David the swarfer OpenBuilds Team
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    you need to select it in the Setup|Postprocess tab
     

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  4. David the swarfer

    David the swarfer OpenBuilds Team
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    a further small refinement is to deselect the 'order by depth' so that it finishes each pocket completely before moving to the next one.
     

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  5. ADAM FAIRHEAD HALL

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    Mate thanks so much for all of that! Vids were super helpful. I've worked as a drafter for almost 30 years using AutoCAD now Revit which is another Autodesk modelling package - I thought there'd be a bit more crossover in functionality with Fusion but it really is it's own beast. Looking forward to learning more.

    Thanks again.
     
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  6. ADAM FAIRHEAD HALL

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    Not sure if I need to start a new post but further to the above everything is running much better, finally getting correct cutting depths etc.

    I am however not sure why I'm now getting multiple passes over the stock before the tool engages with actual material. Typical toolpath looks like this...

    Again, thanks for any assistance you guys might have.

    upload_2023-1-7_22-53-0.png
     
  7. Alex Chambers

    Alex Chambers Master
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    Start a new thread in the software section and upload your Fusion file so we can have a look at it.
    Alex.
     

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