16 years on a factory floor, and I still get the same question from contractors: “Should I buy cast metal or fabricated metal letters?” They think it’s a simple material call. It isn’t. It’s a money call, a lead time call, and a weather call.
I’ve burned my hands on both. Cast letters come out of a mold. Fabricated letters get cut, bent, welded, and ground from sheet or plate. One’s poured. One’s built. They look similar from 20 feet away. They don’t cost similar.
Here’s what nobody tells you: most “cast metal” signs at chain restaurants aren’t solid cast at all. They’re cast aluminum faces welded to a fabricated sheet back. The face is cast. The body isn’t. You’re paying for the face and the texture.
Cast metal starts as molten aluminum, brass, or bronze poured into a mold. The mold gives you a solid face, raised serifs, and a texture you can’t fake with a brake press. It’s not sheet metal. It’s foundry work.
Most cast letters on restaurants and banks are cast aluminum. It weighs less than brass, costs less, and takes powder coat cleanly. A cast aluminum face might be 6-10mm thick at the center. It tapers thinner at the edges. That’s normal. It’s also why cast letters cost more—the foundry has to make a pattern for each letter, and that pattern takes time.
If someone quotes you “solid cast bronze letters” for a strip mall tenant, ask them to put that on the purchase order. You’ll learn fast what they actually mean.
Our aluminum letters line includes cast face options. We won’t lie and call them solid cast if they’re not.
Fabricated metal letters are cut from sheet or plate on a laser, bent on a press brake, welded with TIG, ground smooth, and finished. No mold. No foundry. That’s why they’re faster.
Look, I’ve watched a 24-inch stainless letter go from a flat sheet to a finished sign in two days. Laser cutting holds ±0.1mm. Then a welder works the corners. Then grinding and polishing. It’s not automatic. It’s skilled labor, but it’s repeatable.
Fabricated letters are usually 1.0mm to 3.0mm stainless steel or aluminum. For stainless, 304 is the default: 18% chromium, 8% nickel, density 7.93g/cm³. It’ll live 10+ years outside. 316 is the marine upgrade with 2-3% molybdenum. It costs 20-30% more. For a strip mall in Ohio, 304 is fine. For Miami Beach, pay for 316.
Our stainless steel letters are fabricated in-house. We stock 304 and can source 316. We don’t keep 316 in every thickness because it’s dead inventory for most buyers.
Fabricated metal is cheaper. That’s not an insult. That’s math. A fabricated aluminum letter from our floor runs $10-25 per letter. A fabricated stainless letter runs $15-40. These are factory prices, not US retail. US retail installed can hit $200-700 per front-lit letter, but that’s another conversation.
Cast metal costs more. You’re paying for pattern work, foundry time, and a thicker face. If you order 10 cast aluminum letters, the pattern cost gets spread across 10 pieces. If you order one, you eat the whole pattern. MOQ of 1 sounds great, but the price per letter will make you blink.
The ugly truth is that some importers buy fabricated aluminum, bead-blast it, and call it “cast finish.” It’s not cast. It’s a texture trick. It can look decent from 10 feet. It won’t have the same dimensional depth. Tell your customer the difference before they climb a ladder and touch it.
Both survive if you pick the right alloy and thickness. Both fail if you cheap out.
Fabricated 304 stainless lasts 10+ years outdoors. That’s not a guess. That’s what the 18% Cr and 8% Ni give you. Fabricated aluminum is naturally rust-proof and lasts 8-12 years with a good powder coat. Anodized aluminum also works, but it’s a different finish than powder.
I’ve seen this go wrong: a casino ordered cast aluminum letters with a metallic finish. The foundry didn’t clean the mold release off the face. Six months later, the paint bubbled like bacon. That’s not a material failure. That’s a process failure.
For coastal or industrial sites, 316 stainless is the answer. It has 2-3% molybdenum. If your client’s sign is 50 feet from saltwater, don’t argue about the upcharge. Put it in the quote.
Fabricated metal likes thin profiles and sharp edges. You can get a 3mm stroke width. You can weld returns as thin as 25mm or as deep as 100mm. If the letter is huge, use 2.0-3.0mm sheet so it doesn’t oil-can in the wind. Rookie mistake: ordering a 4-foot fabricated aluminum letter in 1.0mm sheet because it saves weight. It waves like a pond in a storm.
Cast metal likes thick profiles and soft edges. You need draft angles so the part releases from the mold. Sharp interior corners get rounded. If your logo has a razor-thin serif, cast may not reproduce it. We’ve had customers send us a 1px line on a logo and ask for cast. We tell them no. It won’t cast clean. Fabricated laser cutting will.
For a luxury lobby, brass letters with a cast face can look incredible. But if the logo is thin, think twice.
Here’s a number: laser cutting tolerance is ±0.1mm. Casting tolerance is more like ±0.5mm to ±1.0mm, depending on the foundry. If exact dimensions matter, fabricated wins.
Our standard production is 7-15 days for fabricated metal letters. That includes laser cutting, bending, TIG welding, grinding, polishing, and finishing. It does not include shipping. Express shipping is 7-15 days for small orders. Air freight runs 10-20 days at $4-12/kg. Sea freight is 50-70 days, but it costs $80-200/m³ LCL or $1,200-3,000 FCL.
Cast metal letters don’t fit that same 7-15 day window. Pattern making adds time. Foundry schedules add more. If you need cast letters in three weeks, call someone local and pay for it. We’ll tell you honestly: cast orders from us can stretch beyond 30 days depending on the pattern. Fabricated orders leave the floor in 7-15.
MOQ is 1 piece on our end. You want one fabricated stainless letter? We’ll make it. You want one cast brass letter? We’ll make that too, but the setup cost doesn’t shrink just because the order is small.
We’re good at fabricated metal letters. Stainless steel, aluminum, brass. Laser cut, welded, ground, polished, powder coated. We ship worldwide. We’re ISO 9001
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