grinder.svg · 125 lines
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<text x="68" y="92" font-family="Arial,sans-serif" font-size="29" font-weight="700" letter-spacing="3" fill="#20383d">HAND GRINDER</text>
<text x="70" y="120" class="sub">EXPLODED ASSEMBLY · CONICAL BURR MECHANISM</text>
<text x="1430" y="85" text-anchor="end" class="sub">01 / MECHANICAL STUDY</text>
<!-- vertical axis and assembly guide -->
<path d="M700 126V1014" class="dash"/>
<text x="716" y="291" class="sub" transform="rotate(90 716 291)">COMMON SHAFT AXIS</text>
<!-- crank handle assembly -->
<!-- crank hub atop axle -->
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<!-- bent crank arm -->
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<path d="M702 159 C752 150 806 135 856 122 L912 113" fill="none" stroke="url(#metal)" stroke-width="10" stroke-linecap="round"/>
<!-- knob -->
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<!-- separate lid -->
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<ellipse cx="700" cy="240" rx="24" ry="8" fill="#9eaeaa" class="fine"/>
<circle cx="700" cy="240" r="6" fill="#20383d"/>
<!-- hopper / upper body, open top -->
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<!-- beans in hopper opening -->
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<!-- lower rim / outlet throat of hopper -->
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<ellipse cx="700" cy="430" rx="63" ry="12" fill="#f3f0e7" stroke="#21383c" stroke-width="2"/>
<!-- outer conical burr carrier ring, exploded -->
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<!-- visible inner cone-wall section / burr teeth -->
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<path d="M618 500 L637 545 M632 500 L648 550 M648 500 L661 553 M666 500 L675 555 M684 501 L689 556 M702 501 L702 556 M720 501 L715 555 M738 500 L729 553 M756 500 L742 550 M772 500 L755 546" stroke="#405c60" stroke-width="3"/>
<ellipse cx="700" cy="494" rx="94" ry="20" fill="none" stroke="#21383c" stroke-width="2.5"/>
<!-- carrier underside lip -->
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<!-- inner conical burr and shaft, separated beneath ring -->
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<!-- conical burr ridges -->
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<!-- adjustment spring and washer around shaft -->
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<!-- adjustment collar -->
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<!-- adjustment knurl ticks -->
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<!-- main lower housing, open / cutaway to reveal drive -->
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<!-- grind adjustment dial at front -->
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<!-- collector cup below -->
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<!-- grounds visible in cup -->
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<!-- numbered leaders and labels -->
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<circle cx="1040" cy="151" r="14" fill="#315961"/><text x="1040" y="151" class="num">1</text><path d="M1024 151h-36l-25-16" class="fine"/><text x="1070" y="146" class="label">CRANK & DRIVE</text><text x="1070" y="166" class="sub">REMOVABLE HANDLE · STEEL AXLE</text>
<circle cx="382" cy="248" r="14" fill="#315961"/><text x="382" y="248" class="num">2</text><path d="M398 248h59l96 1" class="fine"/><text x="96" y="244" class="label">HOPPER LID</text><text x="96" y="264" class="sub">LIFT-OFF DUST COVER</text>
<circle cx="1002" cy="360" r="14" fill="#315961"/><text x="1002" y="360" class="num">3</text><path d="M986 360h-77l-71 29" class="fine"/><text x="1032" y="356" class="label">BEAN HOPPER</text><text x="1032" y="376" class="sub">OPEN-TOP FEED CHAMBER</text>
<circle cx="374" cy="513" r="14" fill="#315961"/><text x="374" y="513" class="num">4</text><path d="M390 513h72l120 0" class="fine"/><text x="96" y="509" class="label">STATIONARY OUTER BURR</text><text x="96" y="529" class="sub">RING-SHAPED · TOOTHED INNER FACE</text>
<circle cx="1000" cy="622" r="14" fill="#315961"/><text x="1000" y="622" class="num">5</text><path d="M984 622h-84l-142 5" class="fine"/><text x="1030" y="618" class="label">ROTATING CONICAL BURR</text><text x="1030" y="638" class="sub">MATCHING GROOVED GRINDING SURFACES</text>
<circle cx="383" cy="735" r="14" fill="#315961"/><text x="383" y="735" class="num">6</text><path d="M399 735h139l144-19" class="fine"/><text x="96" y="731" class="label">SHAFT, SPRING & WASHER</text><text x="96" y="751" class="sub">PRELOAD KEEPS BURRS ALIGNED</text>
<circle cx="1000" cy="820" r="14" fill="#315961"/><text x="1000" y="820" class="num">7</text><path d="M984 820h-57l-108 0" class="fine"/><text x="1030" y="816" class="label">GRIND-SETTING COLLAR</text><text x="1030" y="836" class="sub">ROTATE TO ADJUST BURR GAP</text>
<circle cx="374" cy="907" r="14" fill="#315961"/><text x="374" y="907" class="num">8</text><path d="M390 907h80l122 0" class="fine"/><text x="96" y="903" class="label">LOWER BODY</text><text x="96" y="923" class="sub">SUPPORTS ADJUSTMENT ASSEMBLY</text>
<circle cx="1000" cy="1007" r="14" fill="#315961"/><text x="1000" y="1007" class="num">9</text><path d="M984 1007h-70l-105-5" class="fine"/><text x="1030" y="1003" class="label">GROUNDS CUP</text><text x="1030" y="1023" class="sub">TWIST-OFF COLLECTION VESSEL</text>
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<!-- footer scale / note -->
<text x="70" y="1078" class="sub">EXPLODED ALONG THE GRINDER'S CENTRAL DRIVE AXIS · NOT TO SCALE</text>
<text x="1430" y="1078" text-anchor="end" class="sub">BURR GEOMETRY: CONICAL / NOT FLAT</text>
</svg>Exploded hand grinder: GPT-6 Luna
modelopenai/gpt-6-lunataskexploded-grinder@v1, checks c1, harness h1date2026-10-05rounds1 of 8 allowed, 12 minutes on the clockcost$0.0038thinkingmediumtokens21,646 in, 5,688 out, of which 703 reasoningtime1 min 6 sfailedAll eight parts: incomplete, component missing, major, its note said nothing was wrong · Parts fit: false, geometry distorted, major, its note said nothing was wrong
All eight partsdecided by looking · Pass if every listed part is drawn as a separate shape and each has a label naming it. A part only named in a label or a comment, with nothing drawn, fails it. The label must say what the part is, in any words: a name that only says where it sits ("top plate") or what it is made of, or a mention in another part's caption, does not count.fail
Stack orderdecided by a number, from the filepass
Parts fitdecided by looking · Pass if each listed pair of mating parts looks as if it would go together as stated: the right angle, nested inside, or sitting on top. One pair that plainly could not fails it.fail
One assembly axisdecided by looking · Pass if one line runs through the middle of every part on each listed axis, and every leader line leaves from the same side. One part pushed off its axis fails it.pass
Labels matchdecided by looking · Pass if following each leader line from its label ends on the part that label names. One label pointing at the wrong part, or at nothing, fails it.pass
There is no post about this one, since only some results need one, so the picture, the source and the scoring are here instead.
run 1 · 3r · $0.0065
run 2 · 1r · $0.0046same prompt, other modelsall 12 runs on Exploded hand grinder →
Draw an exploded assembly diagram of a manual coffee grinder, as an SVG. Use a hand grinder with conical burrs rather than flat burrs.Frozen at v1. This model got this and nothing else.
Top to bottom: handle knob, crank, body, outer burr, inner burr, spring if drawn, adjustment dial, catch jar. The drive shaft runs through the body and both burrs, so it is left out of the order, the way the French press leaves out its rod. The adjustment is at the bottom, below the burrs, and the inner cone comes out downwards through the fixed outer ring. Checked against Comandante's FAQ for the C40, Coffeegeek on the Timemore C2, Hario's spare-parts list and a review for the Skerton Pro, and a guide to the Porlex Mini. The Skerton has no spring, so the spring is not required. How it is scored, and this run's files on GitHub.