How the work actually gets made

A tilting 0.96" OLED desk widget on an M3 friction hinge — the first-proof hinge+wire coupon, folding flat → open across three states + an animation, with the ESP32-S3-Zero and OLED it carries. Collision-free across the whole fold (swept-boolean gate); unproven until the bench.

A stand insert cut for the HS-02B, loose on my HS-02A. Tightening the two inner seats without moving a point of the exterior, proven to 0.000 mm. Measure → coupon → the bug → gauge → adversarial review.

The TP1 knob's reeded side, adversarially reviewed, then five printable alternatives — each as an AI beauty shot, a CAD render, and a live 3D model you can spin. Why FDM caps how fine a knurl can go.

The reusable loop: the fit-gauge, the three trust rules, the tool stack, and why a render is never a fit.