
Cnc Taper & Radius Coordinator
Calculate CNC Taper
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Archived App (Last seen on 12 Jun 2025)
This is an archived listing of the app previously available on the App Store.Although the app is no longer distributed by Apple, you can still view its description, screenshots, version history, ratings, and metadata for reference.
About
CNC Taper and Radius Calculator – Simplify Your Machining Workflow
This app is a powerful and user-friendly tool designed to help CNC machinists calculate taper angles and radius coordinates with precision. Whether you're working with plastic, aluminum, or other metals on a CNC machining center, this app can significantly simplify your programming process—especially for chamfering (C) and rounding (R) operations.
Why Use This App?
Chamfering and radius programming can be complex, especially when done manually. This app helps reduce programming errors and saves time by generating essential coordinates and values for CNC operations. It’s especially useful when CAD/CAM systems aren’t available, making manual calculation much faster and easier.
CNC Radius Programming Basics
To program a radius on a CNC lathe, you typically have two options:
- Using the built-in program editor
- Using a G-code editor (preferred for flexibility and precision)
With a good understanding of G-code and this app’s assistance, you can program smooth arc movements and precise radius transitions easily.
Automatic Chamfering and Rounding Tutorial (G-code Samples)
Chamfering (C)
- G01 X30. Z-20.
- G01 X50. C2.
- G01 Z0
This sequence moves the tool in a positive Z direction and adds a chamfer (C2).
Rounding (R)
G01 X30. Z-20.
G01 X50. R2.
G01 Z0.
This example rounds the corner with a 2mm radius while moving in the X direction.
You can also program chamfering and radiusing in negative directions or from different axis movements depending on your part geometry. Both C and R values define how much material to cut off or blend around corners.
Coordinate Calculation for Complex Contours
While calculating XY coordinates for simple shapes like rectangles is straightforward, it becomes more challenging when dealing with tapers, angles, or partial radii. Without CAM software, manual calculation using trigonometry becomes essential.
This app helps bridge the gap by:
- Automatically computing taper and radius points
- Providing clear visual aids (where applicable)
- Reducing human error in programming
Tools Needed
A solid foundation in manual CNC programming still involves:
- A text/code editor
- A calculator
- Basic understanding of geometry and trigonometry
With this app, many of these tasks become easier and more accessible—even for those newer to manual CNC programming.
Whether you're a seasoned machinist or just learning, this CNC taper and radius calculator app is a valuable assistant for making your machining process smoother, faster, and more accurate.
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June 4, 2025




