Heat Insert Tester Generator (Customizable Cube)

If you frequently use threaded heat inserts in your 3D printing projects, this tool will save you time and frustration. This customizable heat-insert tester is designed to help you quickly determine the optimal hole size and fit for different brass heat inserts.

The model is parametric and can be adjusted directly via an online configurator. You can define several key parameters (shown on drawing below):

• Edge  Side length of the cube
• Height – Cube's height (Z-axis)
• Bigger Cylinder Radius –Controls the entry guide shape
• Bigger Cylinder Height – Controls the entry guide shape
• Smaller Cylinder Radius – Controls the final fit for the insert

• Corner Radius – Rounds the edges for easier handling and print quality

  

This is especially helpful when switching between filament types, printer tolerances, or brands of heat inserts. Each cube allows you to test how an insert fits with heat - helping you identify the right combination for secure and reliable installations.

Whether you're a maker building custom enclosures or a hardware tinkerer designing modular assemblies, this tool will streamline your workflow.

Tips: Print a few variations in one batch to test fit tolerances in your material. Don't forget to record the parameters you used for each test block! This will help you track which configuration works best and avoid guesswork in future prints.