Mastercam – Changing Arc Output Inside Your Control Definition
When programming with Mastercam, the user has a couple options inside Mastercam to allow the user to easily make basic changes to the output of their code. One of the changes a user may want to change is how the Control Definition compiles the arc output in their posted code. This can be done for both lathe and milling machine control definitions. Below, I will show you how to change your output to show as ‘I’, ‘J’, and ‘K’ or ‘R’ respectfully.
Step 1 – Open the Machine Definition
Step 2 – It will prompt you that you are about to make global changes to the post, check yes
Step 3 – Open the Control Definition
Step 4 – Open the Arc settings and change the Arc center type (in orange) to Delta start to center. If it is selected already, reselect it. Afterwards, save your settings using the green check as you back out.
This setting will give you the results below.
Step 5 – Click Yes to reload the machine.
Would you rather see the output as ‘R’?
When you change the Arc center type to radius as seen below
You will see the blow output when the code is compiled.
About the author
While Marcus has been a SOLIDWORKS Applications Expert with MLC CAD Systems in Oklahoma for over a decade, his knowledge extends into all product lines MLC offers. More than once, he has held the prestigious title of the world’s most certified SOLIDWORKS AE. He actively supports the user group community and is known for his improv comedy tips and tricks sessions. Connect with Marcus on LinkedIn to discuss your project.


