Mach3 Screenset Editor (2026)

Mastering the Mach3 ScreenSet Editor: A Guide to Customizing Your CNC Interface

One of the most powerful features of Mach3 CNC control software is its customizability. While the standard "Mill" and "Turn" screens are functional, they aren't always optimized for specific workflows or screen sizes. This is where the Mach3 ScreenSet Editor comes in.

This guide explores what the ScreenSet Editor is, how to access it, and how you can use it to tailor your CNC machine interface to your exact needs.

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3. Programming Buttons (The Brains)

Buttons require code to function. When you create or edit a button, you will see a field for the VB Script.

• Standard Buttons: Common functions (like "Spindle On") have standard functions.
• Custom Macros: You can write your own VB script.
  • Example: You want a button that zeros the Z-axis, moves to X0 Y0, and sounds a beep. You would write a macro for this and link it to the button in the editor.

Part 6: Avoiding Common Pitfalls & Debugging

The Screenset Editor is powerful, but it was written years ago. Here is how to avoid frustration. mach3 screenset editor

Option A: The Classic Screen4 Editor (Most Common)

1. Navigate to your Mach3 folder (usually C:\Mach3).
2. Look for an executable named Screen4.exe.
3. Double-click to run it. Note: On modern Windows versions (10/11), you may need to run it as Administrator.

Part 8: Step-by-Step Tutorial – Building a "Zero All" Panel

Let’s build a practical example together. We will create a custom cluster to zero all axes at once.

Step 1: Open Screen4 and load your working copy of 1024.set.

Step 2: Find an empty space (near the top right is good). Click the Group Box tool. Drag a rectangle. Label it "Zero All Axes". Mastering the Mach3 ScreenSet Editor: A Guide to

Step 3: Click the Button tool. Draw a square inside the box. In the properties:

• Width: 60, Height: 40
• Text: "Zero X"
• Background: Light Blue
• Button Action: DoOEMButton(1008)

Step 4: Repeat Step 3 for Y and Z, positioning them side by side.

• Zero Y Action: DoOEMButton(1009)
• Zero Z Action: DoOEMButton(1010)

Step 5: Create a fourth button, bigger than the others. Label it "Zero ALL". Standard Buttons: Common functions (like "Spindle On") have

• Action: Let’s use a macro. In C:\Mach3\Macros\YourName\ create ZeroAll.m1s with:

DoOEMButton (1008) 'Zero X
DoOEMButton (1009) 'Zero Y
DoOEMButton (1010) 'Zero Z

• In the button properties, set Button Action to DoOEMButton(116) (assuming you saved it as M116.m1s or use the macro call structure).

Step 6: Click File > Save.

Step 7: Open Mach3. Go to Config > System Hotkeys > Load Screen. Select your new .set file. Restart Mach3. Your new zeroing panel is live.

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Branding & Aesthetics

1. Click the Bitmap tool.
2. Draw a rectangle in the corner of the screen.
3. Import a .bmp file (e.g., your company logo). Keep it under 200x200 pixels to avoid lag.