partforge

Laser box printed hinges

hard tier · create

The request

I want to build a small tool box on my laser cutter from 3 mm birch plywood: finger joints at the corners, a flat lid, and two 3D-printed hinges whose tabs slot into the back panel and the lid so the lid swings open. Engrave TOOLS on the front. Outside size roughly 160 × 110 × 80 mm.

What the AI judge checks

  • An open box built from flat panels — a bottom and four walls — with a separate flat lid
  • The corners are finger-jointed: the fingers of adjoining panels interlock rather than overlapping or leaving gaps
  • Two hinges sit along the back edge, joining the lid to the back panel
  • The word TOOLS is engraved on the front panel and is legible
  • The lid is attached through the hinges rather than floating free of the box
  • No floating, detached or unexplained geometry

Measured checks

  • at least five sheet panels (gate)
  • sheet thickness bound to a control (gate)
  • a clearance control and no kerf control (gate)
  • the clearance control is one the kit's README lists
  • at least two printed parts (gate)
  • verify.ok from declared expectations (gate)
  • the cut & print kit builds (gate)
  • the kit carries print files for the hinges

Ranked by hand

One reviewer put one attempt from each model in order, best first, ties left tied.

  1. #1 tie
    Gemini 3.8 Flash
    Gemini 3.8 Flash's ranked attempt
  2. #1 tie
    Haiku 5.5
    Haiku 5.5's ranked attempt
  3. #1 tie
    GPT-6 Sol
    GPT-6 Sol's ranked attempt
  4. #1 tie
    GPT-6.1 Sol
    GPT-6.1 Sol's ranked attempt
  5. #1 tie
    Sonnet 5.5
    Sonnet 5.5's ranked attempt
  6. #1 tie
    Gemini 4 Argon
    Gemini 4 Argon's ranked attempt
  7. #1 tie
    Opus 5.5
    Opus 5.5's ranked attempt

Ordering by hand decides Human rank and Human rate on the leaderboard; it never affects Overall or Strict.

Every model's attempts

Run hard-compact-2026-10-162026-10-16commit 6fa9f854spend $116.04 + $54.69 AI judging, 1 unpricedOther runs: 2026-09-23T06-56-16-hard-baseline-2026-09-23, 2026-09-10T19-44-23-baseline-2026-09, 2026-09-04T20-02-10-stage2-hard-cases, 2026-09-04T19-48-31-screen-14-fixed