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

Drill Press Assistant