Education · Open source
Drill Press Assistant
Mathieu GRENET
Spindle speed calculator and belt position advisor for drill presses
Opens the official F-Droid page
About Drill Press Assistant
Calculates the spindle speeds of a belt-driven drill press and recommends the optimal belt position for a given drill diameter and material.
Describe your machine once — motor speed, pulley stacks, belts — and the app computes every achievable spindle speed, draws the transmission diagram, and tells you which belt position to use for the hole you are about to drill.
Features:
* Interactive transmission diagram showing the current belt path
* Speed advisor: enter a drill diameter and a material, get the best belt position
* Complete speed table for all belt combinations
* Machine editor with support for multiple machines (create, switch, delete)
* Metric and imperial units
* Interface in English and French
* Fully offline, no permissions, no tracking
How to install Drill Press Assistant
- Tap Download — the app's official page on F-Droid opens.
- Install it with the F-Droid app (recommended, for automatic updates), or use the download button on that page.
- If Android asks, allow the F-Droid app or your browser to install apps, then tap Install.
- Open Drill Press Assistant from your app drawer.

