ThreadTracer for GibbsCAM
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ThreadTracer 4 - Online Guide

   Switch interface tabs with the buttons below to view documentation for each tab  
                      Thread Data Fillet / Chamfer Tooling Machining Thread Options Settings Control                                                                        

ThreadTracer uses a tabbed interface to present its parameters to you. Whatever thread is selected will have the appropriate thread data displayed on the first tab.
Switching between the different thread types are found in the Control tab. You will find descriptions for all input boxes and options in these pages.
Click the 'Online Guide' button in the plugin and it will open this online documentation in your web browser.

Round/Knuckle Thread \\ Thread Data Tab (Tab 1):

  • Nominal : Enter the nominal for the thread. Both DIN 405 and DIN20400 are metric thread standards, so Nominal needs to be metric for calculation.
  • TPI : Set the TPI for DIN 405 knuckle threads.
  • Pitch : Set the metric pitch for DIN20400 knuckle threads.
  • Tolerance Major Diameter : 6h, 7h, 6e, 7e for external DIN 405 thread.
  • Tolerance Pitch Diameter : 6h, 7h, 8h, 6e, 7e, 8e for external DIN 405 thread.
  • Tolerance Minor Diameter : 7h, 8h, 7e, 8e for external DIN 405 thread.
  • Tolerance Pitch Diameter : 6H, 7H for internal DIN 405 thread.
  • Tolerance Minor Diameter : 7H, 8H for internal DIN 405 thread.

  • Ext / Int : If the thread are external or internal.
  • Recalculate : Always click this button after the above entries have been changed, to calculate the correct new diameters,radiuses and flat root.


  • (Mid section) Thread Table (calculated after clicking Recalculate button):
  • Major Diameter, these are the max and min values allowed for Major Diameter, from current entered Nominal.
  • Pitch Diameter, these are the max and min values allowed for Pitch Diameter, from current entered Nominal.
  • Minor Diameter, these are the max and min values allowed for Minor Diameter, from current entered Nominal.
  •       If you work in inches, the numbers in the thread table are automatically converted to inch.

    Thread Specifications :
    Select thread standard to use when calculating.
  • DIN 405 - 1997 (Metric standard with TPI)
  • DIN 20400 - 1990 (Metric standard with metric pitch)

  • Machining Diameters :
          If you work in inches, the numbers here are automatically converted to inch.
  • Major Diameter : Value here is the calculated mean value between max/min from the thread table.
  • Minor Diameter : Value here is the calculated mean value between max/min from the thread table.
  • Thread Height : Value here is the calculated thread height, from the two numbers above.
  • No. Starts : Select number of starts, if the thread is multistart.
  • Lefthand Thread : Check this if its a lefthand thread.

  • Under the Padlock symbol are 3 checkboxes to edit and lock diameters, if the two upper boxes are checked, the thread height will always be calculated from the two locked numbers.
    Locking Major Diameter and Thread Height, the Minor Diameter will be calculated with using the locked numbers.
    Only 2 numbers can be locked, if all three are locked, it will by default always use Major and Minor diameter and then calculate thread height.

    If you edit a diameter and enter a wrong number or deletes the entry, clicking 'Recalculate' will restore the numbers back to initial values.

    Control buttons at the bottom.

    Use the buttons at the bottom of the ThreadTracer dialog to turn on or off actions to make.


    Everything in the window is controlled by the 'Do It' button.

    You can turn on/off options, generate visual geometry, change cut depths, change tool sizes and everything will be recalculated and updated when you press 'Do It'.
    As long as the 'Process Ops' or 'NC Postprocessor' are disabled, no GibbsCAM operations or g-code will be generated.

    Set up the all the roughing and finishing of the thread and only enable 'Process Ops' when everything seems correct. With 'Process Ops' enabled it will generate GibbsCAM threading operations.

  • Material Control : This will enable material control, and keep all threading cuts within the set limits. By default the limits are always set to Major and Minor diameter.
  • Do Roughing : This will enable roughing of the thread. When enabled it will run the roughing of the selected thread with the set tool parameters.
  • Do Finishing : This will enable finishing of the thread. When enabled it will run the finishing of the selected thread with the set parameters.
  • Process Ops : This will create GibbsCAM threading operations for all the calculated thread coordinates.

  • 'Do Roughing' and 'Do Finishing' can be set individually. If only 'Do Finishing' is enabled and 'Process Ops', it will only create GibbsCAM threading operations for the finishing passes.

    Click 'Do It' button to start running the options that's selected.

    Click 'Save Data' to store the current thread setup into the GibbsCAM program

    It will create a new data entry if its a new thread, after the thread setup is stored the button will change to 'Update Data'.
    This way you can store and update the same thread entry, and not create a completely new thread entry every time the 'Save Data' is clicked.
    If you need to create a new data entry in the GibbsCAM part, you must close ThreadTracer and restart it, and it will now start with a new data entry.


    These lines of text can also be copied and pasted into other GibbsCAM programs, to quickly recreate the thread without typing in all the parameters again.

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