Maryland & Delaware's Aluminum Welding Specialist — Fabrication, Repair & Precision Machining
Apprentice-trained since the 1970s. Fair prices. Built to last.
Thirty years of specialist welding, fabrication and precision machining serving Maryland, Delaware and the Eastern Shore. We built our reputation on word of mouth, taking on the jobs others turn away, fixing what others got wrong and delivering work that holds. From a cracked aluminum casting to a precision machined prototype, from a boat skeg to a bent trailer frame, if it needs doing right we are the shop for it. AWS certified. Mobile welding available. We come to you.
From cracked castings to marine hull damage, we handle aluminum repairs most shops won't touch. Specialist filler wire selection matched to your specific alloy — not just whatever is on the shelf.
VIEW SERVICESExhaust systems, manifolds, engine components and structural repairs in stainless steel, cast iron and titanium — including aviation-grade work for gas turbine components. Right process, right metal, every time.
VIEW SERVICESWe bring the shop to you. Boat docks, farms, job sites and industrial facilities across Maryland and Delaware. AWS certified and fully equipped — no tow-in required.
VIEW SERVICESManual machining by our tool and die makers for repairs, prototypes, and one-off parts. Shaft and bearing repair, head and manifold resurfacing, surface grinding, and parts made from a sample. One part made right, not a thousand parts made cheap.
VIEW MACHINE SHOPHands-on training from beginner to AWS D1.2 test prep. Old-school approach, no fluff, guaranteed skill. Sixteen hours and you leave knowing how to weld aluminum.
VIEW TRAININGMost Welding Shops Use the Same Wire on Every Aluminum Job. We Don't.
There is a reason aluminum welds crack, leak and fail — and it almost always comes down to one thing. The wrong filler wire on the wrong alloy. Most shops reach for 4043 every time regardless of the application. We know when that is right and we know the four other wires that outperform it when it isn't.
We call it the 4043 Trap. We have built an entire page around explaining it — because an educated customer gets a better repair.
If you have aluminum that needs welding, or a repair that has already failed once — read this first.
Specialist Marine Aluminum Welding & Repair
Saltwater punishes aluminum differently than any other environment. Galvanic corrosion, vibration fatigue and the wrong filler wire are the three reasons most marine aluminum welds eventually fail. We understand all three.
From cracked transoms and hull fatigue cracks to T-top frame repairs, pontoon float restoration and mobile dock-side welding — we have a dedicated page covering everything marine aluminum and why it fails. We also offer fee-based damage assessments for insurance claims and mobile air pressure leak testing for pontoon floats.
If your boat has a crack, a failing weld or a repair that didn't hold — this page is for you.
Manual Machine Shop for Repairs, Prototypes & One-Off Parts
Not every problem needs a new part ordered from a catalogue. Some problems need a machinist who can look at what's broken, understand what it has to do, and make the right part from scratch.
Our tool and die makers run a manual machine shop built for precision repair work, prototypes, and the jobs busy production shops turn away. Shaft and bearing repair, cylinder head and exhaust manifold resurfacing, surface grinding, keyways on our metal shaper, and parts made from a sample with no drawing needed. One part made right, not a thousand parts made cheap.
From a CH-47 Chinook refueling probe mount to a Yanmar saildrive shaft and classic Corvette exhaust manifolds, we support local industry, auto shops, marine yards, and individual customers across Cecil County, MD, Maryland, Delaware, and the Chesapeake Bay region
From Repairs to Custom Builds — Explore Our Work
From industrial repairs to flight-critical aerospace fabrication, every job gets the same attention. Our work speaks for itself.
A cracked pontoon boat transom repaired dockside in Rehoboth Beach, Delaware. Insurance estimate approved in two days, dye penetrant crack testing, 5356 TIG welding, and custom reinforcement plates — the full story, start to finish.
READ THE FULL BUILDCracked and broken cast aluminum brought back to full strength. What others say can't be welded, we weld.
VIEW PROJECTOn-site mobile welding repair — we brought the shop to the job. No tow-in, no downtime, fixed on location.
VIEW PROJECTHeavy equipment bucket repair — back in service fast. Industrial welding for the jobs that can't wait.
VIEW PROJECTCustom aluminum hand-rail fabrication — clean lines, solid construction, built to spec and built to last.
VIEW PROJECTA NASA-funded scientific balloon mission needed a critical aluminum structural repair before deployment to Antarctica. Flight-critical work with zero margin for error. Precision TIG welding on aerospace-grade aluminum, done right the first time.
READ THE FULL BUILDThe split ring mount that holds the in-flight refueling probe fitting on a CH-47 Chinook helicopter — the connection point to the tanker aircraft. Machined from solid aluminum plate, faced and turned on our lathe, and installed on the aircraft. Precision aviation machining, made one at a time in our shop.
SEE THE PROJECTWhy PIE LLC Weld & Machine
Thirty years of specialist welding and precision machining. AWS certified. A full manual machine shop on site. Twelve five-star Google reviews — every one of them earned.
We are not a production shop chasing volume. We are a specialist shop that takes on the work others turn away and fixes what others got wrong. Every job gets looked at properly before we start it. Every repair gets the right process, the right filler wire and the right technique for the material and the application.
We have welded flight-critical components for a NASA-funded Antarctic mission. We have repaired aluminum that other shops said couldn't be welded. We have been called in to fix repairs that failed at other shops. We come to you with a fully equipped mobile setup when the job can't come to us.
AWS certified. Apprentice-trained since the 1970s. Serving Maryland, Delaware and the Chesapeake Bay region from our shop in Warwick, Cecil County MD.
If you want it done right the first time — call us.
Most welding courses teach you theory. Ours teaches you to weld aluminum. There is a difference.
PIE LLC Weld & Machine offers hands-on aluminum TIG welding training for complete beginners through to experienced welders preparing for AWS D1.2 certification. No fluff, no overpriced trade school approach strictly old-school, practical instruction from a specialist who has been doing this for thirty years.
In sixteen hours you will leave our shop with the actual skill to weld aluminum. Guaranteed.
We cover technique, filler wire selection, machine setup, cleaning procedures and what the AWS test actually requires. If you own professional-grade AC/DC equipment you are welcome to bring it and train on your own machine.
Available to individuals and small groups. Cecil County MD and surrounding area.
Aluminum TIG Welding Training — Beginner to AWS D1.2 Test Prep
Ready to Weld, Fabricate, Machine or Train?
Whatever you need — a repair, a fabrication, a machined component or hands-on training we are ready to talk. Get in touch and tell us what you have. We will give you a straight answer.