Creating Your First Part

Opening STEP files in Mastercam

1. Open Mastercam

2. Select the Open icon (or use CTRL + O)

   • This displays the ‘Open dialog’.

Within the Open dialog:

3. Change the file type to ‘STEP Files (*.stp;*.step;*.stpnc)’

4. Navigate to the relevant folder and select the step file.

5. Click Open

   • The part opens in Mastercam.

Creating a Machine Group

Within Mastercam:

6. Open the ‘Machine’ tab.

7. From the ‘Mill’ option, select Default

   • This should open a toolpath tree with a default Machine group.

8. Expand ‘Properties’

   1. You’ll see a folder called ‘Files’ (expand the machine group if this is not visible).

Using the Machine Group Setup

9. Double-click Files

   1. This opens the Machine Group Setup.

10. From the options on the left of the Machine Group Setup, click Master Model.

    • It’s the second icon from the top.

11. Click Add from selection

    • It’s the icon to the left of the red X.

12. Select the part.

    • The part is highlighted

13. Click End Selection

    • The ‘Selection’ textbox is populated ('PARTBODY')

Specifying the Stock Setup

14. From the options on the left of the Machine Group Setup, click Stock Setup.

    • It’s the third icon from the top.

15. Click Create rectangular stock.

    • it’s the section option from the left.

14. Select the part.

    • The part is highlighted.

15. Click End Selection.

    • This will create stock at the part bounding box.

Saving the Setup

16. To save your setup, click the green checkmark.

    • It’s near the top-right corner of the Machine Group Setup.

[Optional] - Creating subsequent setups

• Right click ‘Machine Group-1’

  • A pop-up is displayed

From within the pop-up:

• Select Groups →New Machining group → Mill

This should create a new machine group.

Configure the part (and optionally fixtures), as above.