Precision welding,
down to a human hair.
Precision TIG, micro-TIG under magnification, and laser welding for manufacturers, machine shops, mold makers, and startups bringing a product to life. Based in Leominster — parts ship in from anywhere.
Or text a photo of the part — you'll get a straight answer on whether it's weldable.
The trickiest parts, the tightest tolerances.
Precision repairs, prototypes, and production runs — quoted straight and delivered on time.
Precision TIG Welding
Thin materials, stainless, aluminum — critical joints where integrity matters, with every bead placed exactly where it belongs.
Micro-TIG Under Magnification
TIG welding under a microscope — fine edges, exact bead placement, and buildups on parts too small or too critical for a naked-eye torch.
Laser Welding
A different machine and skill set from micro-TIG: laser welds with filler as fine as a human hair, for repairs conventional torches can't reach. Available for the jobs that need it.
Tool & Die / Mold Repair
Injection molds, dies, and tooling repaired to spec instead of replaced — the craft Keenan spent a decade mastering before opening his own shop.
Prototyping & Fabrication
Bringing ideas to life — prototypes and first articles for startups and inventors, from print or napkin sketch, with design consultation along the way.
Production & Repairs
Recurring batch runs on standing contract, plus equipment repairs that keep machinery running and downtime short.
From part in hand to part in production.
Send the part or print
Text a photo, send a drawing, or drop it at the shop.
Get a quote
A straight answer on weldability, lead time, and price.
First one proved out
The repair or first article, done to spec and checked.
Production on schedule
Standing contracts and repeat runs, delivered on time.
Trained where precision was invented.
- A decade at Leominster Micro Welding (est. 1972) — tool & die and injection mold repair under the best in the trade
- Micro-TIG under magnification and laser welding — two skill sets, beads placed exactly where they need to be
- Aluminum, stainless, and tool steel in challenging applications — delivered consistently on time
- The owner signs off on every weld that leaves the shop
"I started at 16 sweeping floors in a micro welding shop. Fourteen years later the standard hasn't changed: every bead goes exactly where it belongs, or it doesn't leave my shop."
Doesn't bite. Anymore.
What we work with.
Rated 5.0 / 5 on HomeAdvisor.
We have worked with Keenan at Vella Welding for a variety of welding jobs. He has always been extremely flexible and responsive. He has welded both aluminum and stainless steel for us in very challenging applications and has delivered consistently on time. I would highly recommend Vella Welding for your welding needs.
Look close. Then look closer.
Real parts off the bench — pen tips for scale.
Things people ask us.
Can you repair a damaged mold or die?
Yes — Keenan spent a decade repairing molds and dies under magnification before opening his own shop. Damaged cavities, parting lines, and edges rebuilt to spec, so you repair the tooling instead of replacing it.
What's the smallest weld you can make?
Micro-TIG under magnification handles welds smaller than a pen tip, and laser welding with hair-fine filler is available for the jobs that need it. If the repair looks impossible, send a photo before you scrap the part.
Do you take on recurring production work?
Yes — standing contracts and repeat batch runs are the core of the shop. First article gets proven out, then your parts show up on schedule.
Can you get set up in our vendor system?
Yes — and we'd rather do it upfront. Send your new-vendor packet with the quote request and the paperwork comes back quickly, so payment never waits on onboarding.
Not sure if it's weldable?
Text a photo to (978) 502-4324. You'll get a straight answer — including "don't spend money on this" when that's the honest call.
Send us the part.
Call, email, text a photo, or use the form — straight answers on weldability, lead time, and price.