3DSKY is not responsible for this extension. By using it, users acknowledge and accept all associated risks.
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Axis Slide Script — Perfect Geometry Sliding Without Distortion

Axis Slide addresses one of the main issues in modeling in 3ds Max — the poor performance of the native Edge Constraint. The script allows for smooth and precise movement of vertices, polygons, and splines along edges or any custom axes, maintaining the perfect shape of the model.

Installation:

1. Drag the .mzp file into the open 3ds Max window.
2. Go to Customize -> Customize User Interface -> Toolbars, select the d3ero category.
3. Drag the Axis Slide button onto any toolbar.

Main Advantages:

- Arrays and Soft Selection: The script works not only with single vertices. Select loops, groups of polygons, or use soft selection — the entire array will slide perfectly along the main guide.
- Axis Freezing (Hard Freeze): When scaling (Scale) or rotating (Rotate), the axes do not reset. The guide is firmly fixed at the desired angle, allowing parts to rotate along any inclined surfaces.
- Versatility: Seamlessly works with both Editable Poly and any splines (Line, Circle, Text). The curvature of arcs is preserved during displacement.
- Safety (Non-Destructive): The script does not break anything. All work occurs in a temporary layer, and when the script is turned off, the result is neatly baked into a new Edit Poly / Edit Spline modifier on top of your stack. You can press Ctrl+Z at any time.

How to Use (Hotkeys):
Just select the object, press the script button, and choose a point. All tips are automatically displayed at the bottom of the screen (in the status bar). You can always call up the cheat sheet with the F11 key.

- Tap SHIFT (without mouse): Switch the guiding axis to the adjacent edge. On splines — update the axis to the new curvature shape.
- Tap CTRL (3 clicks): Create any custom plane for sliding right in the air (enable "S" snapping and click 3 times on any points in the scene).
- Pull the axis + CTRL: Automatically snaps the geometry to the target at a perfect 90-degree angle (3D perpendicular).
- Pull the axis + ALT: Screen perpendicular. Useful for aligning points in orthographic views (Top, Front, Left).

❗️ Important Rule:
If working not in Editable Poly/Editable Spline!
Since the script carefully preserves your modifier history while the script button is on, you cannot add or delete geometry (cut the mesh with Cut, do Extrude, or delete vertices).
The workflow is simple: turn on the script - move the geometry as needed - turn off the script - continue modeling.