Approved Sheet Metal

Approved Sheet Metal Prototype & low volume production sheet metal fabricated parts. Made in America. Founded by accomplished sheet metal fabrication industry experts.

Approved Sheet metal (ASM) is an American job shop manufacturer of custom precision prototype and low volume production sheet metal fabricated parts.When it comes to sheet metal fab, precision is key. At ASM, we offer custom metal fabrication services to meet the exact specifications of your 3D Model and/or print. Our highly experienced team can work with a variety of materials, including steel, a

luminum, and stainless steel, to create high-quality sheet metal parts for a range of industries and applications.

Somewhere, a forklift operator is looking at this pallet and thinking, "that's a really good wrap job." We appreciate yo...
05/28/2026

Somewhere, a forklift operator is looking at this pallet and thinking, "that's a really good wrap job."

We appreciate you noticing.

Every part on here was fabricated to the same spec, inspected to the same standard, then stacked, separated, and wrapped by someone who takes the shipping side of the job just as seriously as the fabrication process. Because a perfect part that shows up damaged isn't a perfect part anymore.

Got a project? Let's talk: https://www.approvedsheetmetal.com/request-for-quote

There’s a simple rule for punched louvers that saves a lot of headaches: keep the height under 3–4x the material thickne...
05/27/2026

There’s a simple rule for punched louvers that saves a lot of headaches: keep the height under 3–4x the material thickness, measured from the top of the sheet to the top of the form.

Break that rule and the material breaks with you. You’ll start to see cracking and tearing, and before long you’re dealing with parts headed for the scrap bin instead of the assembly.

This applies to louvers, embossments, bridge lances, and similar formed features. It’s the same rule across the board, and the same outcome when it’s ignored.

Our SOLIDWORKS tech tip shows how to check it in your model and adjust it before it turns into a problem.

https://www.youtube.com/watch?v=mHtYN8Xdk6k&t=89s



Related: Precision Metalforming Association

Pop quiz: what's the number one thing our team has to address before parts hit the shop floor?A) Bend radius B) Material...
05/26/2026

Pop quiz: what's the number one thing our team has to address before parts hit the shop floor?

A) Bend radius
B) Material selection
C) The holes
D) Kevin's music in the shop

It's C. And it's not even close. Hardware holes that are even slightly off can cause fastener issues, assembly problems, and revisions that push your timeline back. It's a small detail with an outsized impact.

We built the Engineer's Toolbox so you can check hole sizes, hardware compatibility, and more before your drawing ever gets to us.

Kevin, if you're reading this, we're not kidding about D.

Check it out: https://www.approvedsheetmetal.com/blog/sheet-metal-fabrication-dfm-design-reference-guide



Related: ASME (American Society of Mechanical Engineers)

Your car doors are spot welded. Shipping containers are seam welded. And if you’ve ever seen a restored hot rod, there’s...
05/21/2026

Your car doors are spot welded. Shipping containers are seam welded. And if you’ve ever seen a restored hot rod, there’s a good chance plug welding held half of it together.

Three techniques, all doing very different jobs, and all happening on our shop floor.

→ Spot welding joins two sheets by pressing them together and hitting them with electrical current at specific points. It’s fast and efficient, which makes it ideal for high-volume parts like automotive panels.
→ Seam welding uses the same electrical resistance process but runs it continuously along a joint instead of at individual points to create a sealed connection. It’s used when parts need to hold air or liquid, like tanks, containers, and pressure vessels.
→ Plug welding joins two overlapping sheets by filling a hole in the top layer with molten metal, bonding it to the sheet underneath. It’s common in automotive work and structural repairs where you can’t access both sides easily.

Different techniques for different problems.

Here’s how to know which one your project needs: https://www.approvedsheetmetal.com/blog/3-expert-weldment-techniques-for-sheet-metal-fabrication



Related: American Welding Society

There's an awkward stage between prototyping and full production that nobody talks about. You're past the "let's see if ...
05/20/2026

There's an awkward stage between prototyping and full production that nobody talks about. You're past the "let's see if this works" phase but not ready to commit to the "let's make 10,000 of these" phase.

It's the tweenager stage of manufacturing. Too old for prototyping. Too young for mass production. Wearing clothes that don't quite fit and insisting it can handle everything on its own.

Bridge production is how you get through it. We fabricate low volumes of production-intent parts without tooling, so you can validate, test, and build confidence before scaling up.

Your product will thank you later. Even if it doesn't admit it right now.

Learn more: https://www.approvedsheetmetal.com/blog/is-bridge-production-right-for-your-sheet-metal-parts

Quick history lesson: the “silk” in silk-screening is literal. The technique dates back to 10th century China, where act...
05/19/2026

Quick history lesson: the “silk” in silk-screening is literal. The technique dates back to 10th century China, where actual silk was stretched over frames to press ink onto surfaces.

A thousand years (and a few material upgrades) later, we’re doing essentially the same thing on powder-coated sheet metal parts for:

🏷️ Logos
⚠️ Safety labels
🎛️ Control panels
🏢 Branding

If it needs to be on a metal surface and it needs to last, silk-screening is usually the answer.

It’s more affordable than engraving, more versatile than laser marking, and the screens can be reused for repeat orders, which helps keep costs down as quantities go up.

Not bad for a process that predates the printing press by about 500 years.

Learn more about the process: https://www.approvedsheetmetal.com/blog/silk-screening-for-sheet-metal-parts



Related: Fabricators & Manufacturers Association

You only get one shot at a first impression. We made it count.Thanks to Michelle for the five-star review after her very...
05/14/2026

You only get one shot at a first impression. We made it count.

Thanks to Michelle for the five-star review after her very first project with us. We didn’t roll out the red carpet or put on a show. We just did what we always do: respond fast, communicate clearly, and deliver quality parts at a competitive price.

92 reviews. 4.9 stars. Same standard every time.

See more from our customers: https://www.approvedsheetmetal.com/customer-testimonials

Approved Sheet Metal is continuing to expand our team in Hudson, NH.Over the past few years, we’ve continued investing i...
05/13/2026

Approved Sheet Metal is continuing to expand our team in Hudson, NH.

Over the past few years, we’ve continued investing in equipment, technology, systems, and people to support the growth of our custom sheet metal fabrication business. As we continue scaling, we’re looking for more great people to join the team.

Open roles currently include:

• QC Inspector
• Laser Operator
• Punch Press Operator
• Deburr Operator
• Programmers
• Estimators
• Operations Leader
• Business Development Representative

We work on a wide variety of prototype and short-run production projects across many industries, so no two days are the same.

If you’re motivated, detail-oriented, and want to be part of a growing manufacturing company that values speed, quality, teamwork, and continuous improvement, we’d love to hear from you.

Learn more and apply: https://lnkd.in/e7ZFmpri

We’re making a list. We’re checking it twice. We’re finding out whose design file is naughty or nice.(Yes, it's May. Sta...
05/13/2026

We’re making a list. We’re checking it twice. We’re finding out whose design file is naughty or nice.

(Yes, it's May. Stay with us.)

Before you send it to a fabricator, make sure you’ve checked:

✅ Material thickness and availability
✅ Tolerances after finishing
✅ Inside radii based on standard tooling
✅ Clearance for overlapping parts
✅ Welding requirements

Santa may bring presents, but when you follow this list, we bring shorter lead times and lower quotes.

Here’s everything you need to know: https://www.approvedsheetmetal.com/blog/top-5-things-to-check-in-your-sheet-metal-design-file

Address

7 Security Drive
Hudson, NH
03051

Opening Hours

Monday 7am - 5pm
Tuesday 7am - 5pm
Wednesday 7am - 5pm
Thursday 7am - 5pm
Friday 7am - 5pm

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