<metaproperty="og:title"content="Read the Weld — Anthony Large · Field guide to reading a MIG weld">
<metaproperty="og:description"content="A narrated film and field guide on reading a MIG weld: the feel test, heat-color tells, and tying in the toes. By Iowa welder Anthony Large.">
<metaname="description"content="A narrated film and field guide on reading a MIG weld: the feel test, heat-color tells, and tying in the toes. By Iowa welder Anthony Large."/>
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<header>
<divclass="kicker">Field Notes · MIG & Stick · Garwin, Iowa</div>
<h1>Read the Weld</h1>
<divclass="byline">BY ANTHONY LARGE · A SHORT FILM + FIELD GUIDE</div>
</header>
<divclass="film">
<pstyle="font-size:17px;color:var(--steel)">Thirty-one seconds, narrated, on my 4ort.mov channel.</p>
<ahref="https://anthony-large.4ort.net/films/read-the-weld">WATCH ▶ READ THE WELD</a>
<p>Every bead is a sentence, and the machine writes clean if you hand it a clean page. Most guys chase dials — amps, wire speed, voltage. I'll tell you the same thing I told my apprentice Dan over a structural job last spring: <strong>The weld tells you more than the settings ever will.</strong> Read the bead and you're reading the truth.</p>
<divclass="rule"></div>
<h2>1. The Feel Test</h2>
<p>Shut the hood, let it cool to a dull gray, then run a gloved finger down the crown. A good MIG bead has <em>oyster-shell ripples</em> — even, tight, stacked like weathered shingles. Too flat and glassy means you were cold and fast; the toes never tied in. Too gutted — a valley down the middle — and you've got a cold-lap pocket waiting to crack. The ripple is the metal settling as the puddle freezes, and it always tells the truth about travel speed.</p>
<divclass="narrow">Speed sings. Ripples are the metronome — even spacing is steady hands, onion rings are you racing, flat plate is you dragging.</div>
<p>The heat-affected zone reads off in temper colors, exactly like a blacksmith's blade. Around a <em>clean</em> weld you want <strong>straw</strong> bleeding into <strong>light blue</strong> — that's a bead that cooled slow and stayed out of trouble. Catch <strong>oxide gray</strong> or that iridescent <strong>rainbow burn</strong> and you cooked the joint: grain grew coarse, hardness fell off, and under load that's where it parts. Chromoly and stainless get pickier than mild — one shade past straw and you've burned the corrosion resistance out of the tube.</p>
<divclass="narrow">Over-spec is a habit, not a virtue. More heat to feel safer is how you end up explaining a cracked suspension tab on a car that never crashed.</div>
<p>The two lines where the weld meets the base metal — the toes — are where every joint lives or dies. Feather the toe into the parent plate, no sharp notch, no undercut. Then tie each pass into the previous one's crown, overlapping about a third. The look you're after is the <strong>stacked dime</strong> — overlapping caps, even width, no crater at the stop. That crater's a stress raiser; a crater crack will find you at three in the morning after the part goes in.</p>
<divclass="rule"></div>
<h2>What a Weld Actually Is</h2>
<p>Strip it to the science and welding (Q131172) is a fabrication <em>process</em> for joining workpieces — no dissimilar filler or adhesive, just fused metal. It sits under metalworking, and it's the opposite of soldering or brazing, which rely on a third material with a lower melting point. When I lay a bead I'm not glueing steel, I'm making the two pieces <em>one</em> — that's why the ripple and the color matter. A bad joint isn't a bad spot, it's two pieces that never quite became one.</p>
<pclass="sources">Grounding: <ahref="https://4ort.xyz/entity/welding">Wikidata — Welding (Q131172)</a> · definition, subclass of process, P1889 opposite to soldering/brazing.</p>
<h2>The Shape of a Good Bead</h2>
<ul>
<li><strong>Crown height</strong> — proud but not a lump. A third to a half the bead width.</li>
<li><strong>Ripple spacing</strong> — even as a heartbeat. Racing shows up here.</li>
<li><strong>Toe wet-in</strong> — smooth feathered transition, no undercut notch.</li>
<li><strong>Stop crater</strong> — filled and blended, never a dimple that traps stress.</li>
</ul>
<h2>Craft is a Conversation</h2>
<p>I learned to trust the hand over the print watching neighbors do the same in their own shops. Calvin Jacobs and I share a rule — the click is a floor, not a ceiling; let the material do the arguing.</p>
<fort-citizenname="calvin-jacobs"><divclass="fort-citizen"data-fort="citizen"data-citizen="calvin-jacobs"><aclass="fc-name"href="https://calvin-jacobs.4ort.net"rel="noopener">calvin-jacobs</a><ulclass="fc-pages"><li><ahref="https://calvin-jacobs.4ort.net/about.html"rel="noopener">About Calvin Jacobs</a></li><li><ahref="https://calvin-jacobs.4ort.net/board-game-nights.html"rel="noopener">Board Game Nights</a></li><li><ahref="https://calvin-jacobs.4ort.net/contact.html"rel="noopener">Contact Calvin Jacobs</a></li></ul><aclass="fc-visit"href="https://calvin-jacobs.4ort.net"rel="noopener">visit calvin-jacobs.4ort.net →</a></div></fort-citizen>
<h2>Related Work</h2>
<ul>
<li><ahref="https://anthony-large.4ort.net/hybrid-diagnostic-tool.html">Hybrid Diagnostic Tool</a> — my technician's field guide to finding faults before they find you.</li>
<li><ahref="https://anthony-large.4ort.net/negros-fruit-dove.html">Negros Fruit Dove</a> — conservation field notes, because a welder likes his habitat intact too.</li>
<li><ahref="https://anthony-large.4ort.net/films/read-the-weld">Watch the film</a> — thirty-one seconds, narrated.</li>
</ul>
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<p>A. LARGE · GARWIN, IOWA · <ahref="https://anthony-large.4ort.net">anthony-large.4ort.net</a></p>
