Every filament and printer combination has a different tolerance. This generator creates a quick, precise test block with both circular and square pegs to calibrate your specific setup. Get perfect fits every time without wasting hours on failed prints.

🧠 Behind the Design (For Makers & Moderators)

This is a fully parametric OpenSCAD engineering and calibration utility, not a simple static primitive shape. The algorithm utilizes dynamic for loops and mathematical array processing (e.g., plate_w = (number_of_tests + 1) * spacing) to procedurally generate a custom-sized calibration board. It executes complex boolean subtractions (difference()) with iterative gap offsets (tol = start_tolerance + (i * tolerance_step)) and utilizes conditional string concatenation (str()) to automatically engrave precise tolerance labels for each test node. This ensures dimensional validation accurate to the hundredth of a millimeter, making it an advanced diagnostic tool.

🛠️ What can you customize?

• Tolerance Range: Set your starting point (e.g., 0.05mm) and the step size for each hole.
• Number of tests: Generate a quick 3-hole test or a massive 10-hole calibration board.
• Base Size: Change the size of the pegs. Standard is 10mm, but you can scale it up for large mechanical parts.

🖨️ Print Settings

• Material: Works for any filament (PLA, PETG, ABS, ASA, TPU).
• Layer Height: 0.20mm is perfect for a standard calibration.
• Walls: 2 or 3 walls to ensure dimensional accuracy.

❤️ Share your setup
What tolerance did your printer achieve? Leave a comment with your results and a photo! If you give permission I will add your photo to the model images.

Happy printing! :)