partforge

Photo resistor

hard tier · create · with a reference image

The request

The attached photo shows an aluminium-housed power resistor from straight above, with its two leads still soldered on. The leads and the solder lugs are not part of what I want — only the housing: the finned body and its two mounting flanges. The body is 50 mm long and 15.39 mm tall, and the flanges are 1.35 mm thick with 3.7 mm holes. Build the housing to match the picture, lying on its base: the base on Z = 0, X along the body from left to right in the photo, Y up the photo, centred on the origin. Name the sub-part `housing`.
The photograph the model was given
Photo · made with iPhone camera · CC0-1.0

What the AI judge checks

  • The overall form matches the reference: the same kind of object, the same silhouette from the matching angle
  • Proportions match: the relative sizes of the major dimensions agree with the reference within what the eye can judge
  • Every major feature visible in the reference (holes, slots, bosses, tabs, lips) is present in the result
  • Those features sit where the reference has them
  • Nothing is present that the reference does not show — no decorative or unexplained geometry
  • A rectangular finned extrusion with a flat base, grooved along both long sides — not a cylinder or a plain block
  • No wires, lugs or terminals modelled at either end

Measured checks

  • watertight (gate)
  • one sub-part named housing (gate)
  • length is 50 mm
  • width over the flanges
  • height is 15.39 mm
  • two through-holes
  • the -X flange hole clears 3.7 mm
  • the -X flange is there around its hole
  • the -X flange is on one side only
  • the -X hole is 3.7 mm, not a slot
  • the +X flange hole clears 3.7 mm
  • the +X flange is there around its hole
  • the +X flange is on one side only
  • the +X hole is 3.7 mm, not a slot
  • the leads were not modelled

Ranked by hand

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

  1. #1
    Gemini 3.8 Flash
    Gemini 3.8 Flash's ranked attempt
  2. #2
    Opus 5.5
    Opus 5.5's ranked attempt
  3. #3
    DeepSeek V4.1 Flash
    DeepSeek V4.1 Flash's ranked attempt
  4. #4
    GPT-6 Luna
    GPT-6 Luna's ranked attempt
  5. #5
    GPT-6 Sol
    GPT-6 Sol's ranked attempt
  6. #6
    Kimi K3 (Moonshot)

    not acceptable

Parts marked not acceptable fall below the reviewer's acceptable line whatever their order. Ordering by hand decides Human rank and Human rate on the leaderboard; it never affects Overall or Strict.

Every model's attempts

This is an older run. See the current results.

Run hard-baseline-2026-09-232026-09-23commit 6edf19e0spend $212.67 + $43.09 AI judging, 15 unpricedstopped early (interrupted)Other runs: 2026-10-16T18-49-10-hard-compact-2026-10-16, 2026-09-10T19-44-23-baseline-2026-09, 2026-09-04T20-02-10-stage2-hard-cases, 2026-09-04T19-48-31-screen-14-fixed