https://toeb.github.io/tags/testing/Recent content in Testing on toeb / notesHugoen-usSun, 11 Oct 2026 00:00:00 +0000https://toeb.github.io/post/unit-tests-for-3d/Sun, 11 Oct 2026 00:00:00 +0000https://toeb.github.io/post/unit-tests-for-3d/<p>I wanted to 3D-print an ampoule case for my wife, and it fit on the first print. The trick was not the CAD. A verification harness checked every design virtually before the printer saw it. You choose which ampoules and how many; the generator either packs them into a fixed case or designs the smallest case that holds them.</p> <p><strong>Try it:</strong> <a href="https://toeb.github.io/toeb.parametric3d/">paramcad designer</a>, which runs entirely in your browser.</p> <h2 id="from-cad-to-print">From CAD to print</h2> <p>The printed case is the fork-clip version: two 10 ml and four 2 ml ampoules in a 121.5 × 121.5 mm PETG case. It went together on the first print. Only the closing clamps and the clips showed small deviations, which is exactly what the outer loop below turns into calibration data and new rules.</p>