There’s a Facebook thread going around the welding groups titled, more or less, “ChatGPT doesn’t know shit about welding.” And honestly? Whoever posted it isn’t wrong. In April, a welder named Jo Mackiewicz took ChatGPT, Claude, and Grok out to the shop, handed them photos of a thin-tubing repair, and asked what they’d do. Writing it up for The Welder, she found the bots did what bots do — handed her some warm reassurance, then quietly mixed up penetration and fusion, made claims they couldn’t back, and sketched a gusset that looked wrong. Her verdict, more or less: fine for kicking an idea around, not something you’d bet a load-bearing weld on.
So if you run a shop and your gut says “keep that thing away from my actual welding” — good. That instinct is correct, and it’s the whole point of this piece. Because once you draw that line clearly, ChatGPT turns into something genuinely useful: the best part-time office assistant you’ve never had to pay. It just has to stay in the office and out of the booth.
Let me draw the line first — the one thing to never trust it with — then the five things it’s actually great for.
The one thing: never trust it with your numbers or your metal
Here’s the boundary, stated plainly so nobody has to guess. ChatGPT does not know your live price, your weld procedure, your material spec, or what a code actually says. Not “it’s a little shaky there.” It’s flat-out unreliable, and in a couple of those areas it’s dangerous.
Ask it to quote a code clause — say something out of AWS D1.1 — and it’ll happily give you a section number and some official-sounding language. It may also have invented the section number. Language models are known to hallucinate on standards: they’ll misquote a requirement, cite a clause that doesn’t exist, and do it with total confidence. A CWI knows this in their bones, which is why the veterans in every welding forum say the same thing — they trust their memory, a real calculator, or the actual code book over any chatbot. Same story with weld procedures, fit-up, penetration, gas and setup for an aluminum MIG job: people have watched these tools give advice that would ruin the weld.
And your price? That’s the big one, and we’ll come back to it, because a customer waving an AI “estimate” at you is fast becoming a real thing. But the short version: ChatGPT can’t see your steel cost this week, your shop rate, your fixturing time, or the risk you’re carrying on a job. It guesses — often off overseas numbers or stale data — and calls it an estimate.
Keep all of that on your side of the line. Everything below is the stuff that is safe to hand over.
The 5 things ChatGPT is genuinely great for
None of these touch a weld. All of them eat hours you’d rather spend under the hood or with your family. The trick, every time, is the same: you bring the facts and the numbers, it does the writing.
1. Quote and proposal wording — you price, it writes. This is the big time-saver. You already know what a job costs; what drags is turning “3/16 plate, two brackets, maybe four hours, powder-coat after” into something that reads like a real business sent it. So let it. Feed it your rough job note plus your numbers, and get a clean, itemized quote back in a couple of minutes:
You're helping a welding and fabrication shop write a customer quote.
Turn my rough notes into a clean, itemized quote with a short scope of
work, line items, and a professional closing. Use MY numbers exactly —
do not estimate, change, or add any prices. Leave a blank if I didn't
give you a number.
Shop name: [name]
Customer / job: [name — what they want]
My rough notes: [e.g., 3/16 A36 plate, 2 mounting brackets, ~4 hrs
labor at $95/hr, material $140, powder coat sublet $85, 1-week lead]
Tone: straightforward, no fluff.
Read that last instruction again: use my numbers exactly, don’t estimate. That’s the guardrail baked right into the prompt. The bot handles the wording; the pricing never leaves your head.
2. Customer and follow-up texts. The quote you sent Tuesday that went quiet. The “your gate’s ready for pickup” text. The deposit reminder you keep putting off because it feels awkward. ChatGPT writes all of these in a clear, polite tone in about ten seconds — you just paste the situation and tweak the result so it sounds like you.
3. Turning a spec or drawing note into plain English. A customer sends a drawing with a scribbled note, or an engineer’s spec you need to explain to them in words they’ll actually understand. The newer vision-capable models are decent at reading a standard drawing and putting it in plain language — great for explaining scope to a customer or a new hire. (Reading it to grasp intent: fine. Trusting it to certify the spec is right: no. That’s still your job.)
4. Review requests and replies. The shops that show up strong on Google are the ones with a steady drip of real reviews. Drafting the “thanks, would you mind leaving us a quick review?” text — and a warm reply to the ones you get, good or bad — is exactly the low-stakes writing AI is good at.
5. Marketing captions and your online presence. The Facebook post showing off a nice job. The line on your website. The Google Business Profile description. None of it is your craft, all of it takes time you don’t have, and a first draft in your voice is thirty seconds away.
When a customer says “ChatGPT says you’re overcharging”
This one’s new, and it’s coming for every trade. A customer runs your quote past ChatGPT, the bot spits out a lower “estimate” from who-knows-where, and now they’re on the phone telling you you’re too expensive. It stings. Don’t take the bait — there’s a calm way through it, and it actually builds trust. Three moves:
Reframe, don’t argue. Acknowledge they did some homework, then explain what the tool can’t see. Something like: “Glad you looked into it — those tools are handy for a rough ballpark, but ChatGPT can’t see our steel cost this week, our shop rate, or the actual welds your job needs. Its number’s a guess based on other jobs, sometimes in other countries.” You’re not attacking them. You’re pointing at the thing they didn’t know.
Walk them through your quote. Transparency wins here. Break it down — material and grade, labor hours, setup and fixturing, consumables, any code or inspection steps a chatbot would never factor in. The moment they see real costing, “ChatGPT said” stops sounding like a fact and starts sounding like what it is: a guess.
Compare scope, not just price. Ask what they told the bot. Nine times out of ten it assumed lighter material, simpler welds, no prep, no inspection — a completely different job than the one you’re actually quoting. Once you line up scope to scope, the price gap usually explains itself.
And here’s the thing to hold onto: you can draft that whole calm reply with ChatGPT too. Same guardrail — you bring the real reason your price is your price, it just helps you say it without heat.
Get found when someone asks AI “best welding shop near me”
Worth a quick note, because it’s quietly becoming a real source of jobs. People don’t only Google anymore — they ask ChatGPT and other assistants “who’s a good welder near me?” And those assistants lean on your Google Business Profile and your reviews to answer. A shop with a filled-out profile, current photos, and a steady trickle of genuine reviews is the shop that gets named. Setting that up is maybe thirty minutes of free work, and it’s the difference between showing up in that answer and not existing in it.
What this means for you
If you’re a solo or mobile welder: this is pure time back. Batch your admin into one short session — quotes, the follow-up texts, the review asks — and get back to the truck. Save two or three prompts (your quote prompt, your follow-up prompt) with your details baked in so it’s copy-paste-tweak every time. Just never let it near a price or a procedure.
If you’re a two- or three-person shop: make “AI writes the words, the owner sets every number” an actual house rule. Whoever’s doing paperwork that week sounds consistent, and nobody’s ever guessing at a quote because the tool made one up.
If you’re the skeptic who already hates AI for welding: you’re right about the welding part — keep hating it there, that skepticism is protecting you. But notice the line. It’s terrible in the booth and genuinely good at the letter-writing you resent doing. You don’t have to trust it with your craft to let it handle your inbox.
If a customer’s already pushed back on your price with AI: don’t argue and don’t discount out of reflex. Reframe, break down the real costing, compare scope. You’ll close more of those than you’d think, because you’re the one who actually knows what the job costs.
What it can’t do — and never should
- It can’t price your work. It can’t see your steel cost, your rate, your risk, or your shop. Every number stays yours. Full stop.
- It hallucinates codes. AWS D1.1 clauses, section numbers, requirements — it will confidently make them up. Use the actual code book.
- It’s wrong about welding. Procedures, penetration, gas and setup, material specs — it gives advice that sounds right and isn’t. The expertise still lives in experienced welders, exactly as Jo Mackiewicz found.
- It gets facts wrong generally. Dates, part names, quantities. Check everything before it goes to a customer.
- It can’t do the work. The weld, the judgment on a vibration or load job, the reputation you’ve built — that’s you. AI just buys back the hours you were losing to the keyboard.
The bottom line
The welding world’s skepticism about ChatGPT is healthy, and you should keep every bit of it pointed where it belongs — at the booth, the code book, and your price. Draw that line hard. On the other side of it sits a real gift: the quotes, the follow-ups, the reviews, and the marketing that were quietly stealing two evenings a week from you. Let it write the words. You keep the numbers, the metal, and the call.
Want to build this into a real system for your shop — the quote prompts, the follow-ups, and getting found when people ask AI for a welder? Our upcoming AI for Welding & Fabrication Shops course walks through it end to end. In the meantime, AI for Small Business gets you drafting fast, and Get Found by AI: Local Business Visibility plus Answer Engine Optimization for Small Business show you how to be the shop ChatGPT actually names when someone nearby asks.
Sources
- A welder discovers what AI can offer to a small repair shop — The Welder / The Fabricator (Jo Mackiewicz, Apr 28, 2026)
- A welder in a small shop goes another round with AI engines — The Welder / The Fabricator
- How AI can help the metal fabricator — The Fabricator
- Guidelines for representing your business on Google — Google Business Profile Help
