Parametric Mounting Spacer / Standoff Generator

A fully parametric OpenSCAD generator for customizable mounting spacers, standoffs, and adapter plates.

This model is designed for maximum flexibility and supports many different geometries, screw layouts, and head recess types — ideal for electronics, enclosures, robotics, DIY projects, and workshop fixtures.

Features

Supported Shapes

• Round
• Oval
• Ellipse
• Rectangle
• Square
• Triangle
• Pentagon
• Hexagon
• Heptagon
• Octagon
• Nonagon
• Decagon

Adjustable Dimensions

• Height
• Diameter
• Length
• Width
• Corner Radius

Mounting Options

• 0–10 mounting holes
• Symmetrical screw placement
• Automatic edge-safe positioning
• Polygon corner alignment for matching screw counts
• Separate center hole enable/disable

Screw Head Options

For both center and mounting holes:

• No recess
• Cylindrical counterbore
• Countersunk head

Adjustable:

• Hole diameter
• Screw head diameter
• Screw head depth
• Recess side:
  • Top
  • Bottom
  • Both

Additional Features

• Optional engraved label
• High quality geometry
• Fully Customizer compatible
• Clean topology for 3D printing

How To Use on MakerWorld

1. Open the model page on MakerWorld
2. Click the Customize button
3. A new MakerWorld Parametric Model Maker window will open
4. Adjust all parameters directly in the online configurator:
   • Shape
   • Dimensions
   • Spacer height
   • Hole count
   • Hole diameters
   • Screw head recesses
   • Corner radius
   • Labels
5. The preview updates automatically
6. Click Generate Model
7. Download the generated STL or 3MF
8. Slice and print normally

No OpenSCAD installation or CAD software required — everything runs directly inside the MakerWorld browser customizer.

Recommended Tolerances

For best real-world fit on FDM printers, it is recommended to add clearance:

Example

• M4 screw → use ~4.3 mm hole
• 8.0 mm screw head → use ~8.3 mm recess

Why?

3D printers usually produce slightly undersized holes due to:

• extrusion width
• material shrinkage
• slicer compensation
• elephant foot on first layers

The exact tolerance depends on:

• printer calibration
• filament type
• layer height
• print orientation

For very accurate printers:

• 0.2 mm clearance may already be enough

For tighter or rougher printers:

• 0.4 mm may work better

Printing Tips

• Print flat on the large surface
• 3–5 walls recommended for strength
• Use enough top layers above recessed screw heads
• PETG or ABS recommended for structural parts
• PLA works fine for light-duty applications

Notes

• Polygon screw placement automatically aligns to polygon corners when the screw count matches the number of sides.
• Ellipse mode places 2-hole configurations on the long axis automatically.
• All mounting holes stay within the geometry boundaries automatically.