Mactech On-Site

Name: Mactech On-Site
Address: 4079 Pepin Avenue, Red Wing, MN, 55066, US
Telephone: +18003281488
Price range: $

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United States
Red Wing, MN
Mactech On-Site

Portable machining solutions and in situ services
that make tough jobs easier.

Mactech is one of the world’s foremost providers of on-site machining services, on-site heat treating services, and stress-relieving equipment. Mactech provides both products and on-site services for major industries worldwide including petro-chemical, pulp and paper, power generation and ship-building. Our key strength is the ability to assist you with routine and specialty applications – our on-

site solutions team can handle any task and will develop solutions from start to finish. Mactech’s excellent reputation for short lead-time and quick response is unsurpassed in the industry.

06/03/2026

Some successful jobs require you to hug it out to celebrate.

Some jobs require getting underneath a vessel and line boring rudder trunks, stern tubes, struts, and steering linkage bores back into alignment.

This one required both.

Our crew mobilized to machine six rudder trunks, two shaft lines, multiple struts and stern tubes, and dozens of steering linkage bores... all while working in some less-than-spacious conditions.

Using laser alignment equipment and a duo of our BB2252 2.25" portable line boring systems, the team restored critical bearing and bushing fits to proper centerline and specification, helping ensure smooth operation when the vessel heads back to work.

The pictures tell part of the story.

What they don't show is the planning, setup, measurements, patience, and craftsmanship that go into making dozens of bores line up perfectly when you're working underneath thousands of tons of steel.

But, apparently these pictures DO show the amount of friendship the team creates out on site. Hugs not drugs.

Proud of this crew.

06/01/2026

We call this "Tradeshow Trick-or-Treating." 🍬🚢

You win our kids' hearts and you win our business.

(Or in the case of Paducah Rigging, you scratch our backs and we'll scratch yours... literally. That back scratcher was a huge hit.)

One of my favorite parts of coming home from a tradeshow is bringing the kids a little piece of the adventure. The exhibitors at did not disappoint.

A few favorites from the haul:

JD Fields & Company, Inc. can't ever go wrong with a rubber ducky.

Hull's Environmental Services, Inc. with the the Frog paper clip.

Maritime Institute had some of the slickest stickers at the show.

Paducah Barge with the floating keychain so the kids won't lose their Labubu's at the pool this summer.

Great Lakes Maritime Academy with a great squishy ship model/toy.

Turing AI with a nice high quality robot keychain... they were also handing out nice pocket knives attached to it, but we removed that.
Web Engines, LP with the squishy football for the boy who loves football.

MAGNA Lifting Products, Inc. with the EOS Lip Balm which wives will try to steal from the kids.

J.F. Brennan Company with the ultimate kiddo handout, as they created their own coloring book with custom crayons.

Thordon Bearings with the color changing cups that the kids asked "Is this magic?!?!". Also had a great branded Moleskine notebook for dad.

Aurand Manufacturing with the cool poker chip... never too early to teach kids to play poker.

Deansteel Mfg. Co. with an excellent pocket book for coloring in.

Illinois Marine Towing with a really nice canvas notebook and some stellar hats.

And a special thanks to everyone who graciously let us grab three of everything so we could avoid sibling negotiations upon arrival back home.

The inland marine industry is full of hardworking people who solve serious problems every day...

But it's also full of people who remember to have a little fun.

We appreciate all of you.

Safe travels, everyone.

05/29/2026

The U.S. inland waterway system moves more than 600 million tons of cargo every year.

That’s roughly 17% of all intercity freight in America and over $158 billion worth of goods moving up and down our rivers.

That’s a ship ton of cargo.

We had a great time this week at the Inland Marine Expo catching up with longtime customers, meeting new faces, and having the conversations that matter most:

“What problems are keeping you up at night?”

Because that’s where the best solutions start.

Whether it’s line boring a rudder tube, machining a shaft, installing bearings, cutting steel, or finding a way to get a vessel back in service faster… we’re at our best when we’re listening first and solving second.

A special thank you to our friends at Thordon Bearings for another great show and for being a terrific partner in helping keep the inland marine industry moving.

To everyone who stopped by the booth, shared a story, asked a question, grabbed a hat, ate eleven Knudsen's Caramels because you can’t stop eating them, or just said hello… thank you.

Now it’s time to get back to work.

The cargo isn’t going to move itself.

We’ll continue to Make Ship Happen.

05/28/2026

These photos are a good reminder that Mactech didn’t start with giant facilities, polished marketing videos, or fancy software.

It started with machinists figuring it out in the field and a roof over our heads to make some damn fine equipment.

A lot has changed since then. We’ve outgrown buildings, expanded capabilities, and added some incredible people along the way.

But the mentality is still the same:

Show up.
Solve problems.
Do GREAT work.
Take pride in it.

And honestly… some of the old-school setups these guys pulled off still make you stop and say:

“Yeah… that’s pretty badass.”

Proud of where we came from.
Even prouder of the people who built it.

05/27/2026

Banana for scale just doesn’t work when the things you cut are this big. 🍌

These cuts were made with one of Mactech Offshore’s inline diamond wire saws… designed for big diameter cuts, while keeping setup efficient and footprints compact.

Proud of these guys and the work they do every day. And even more proud that THEY are proud of the work they do every day.

Cutting up big stuff safely and efficiently is what we do.

You know where to find us when you need us.

05/25/2026

Today we remember. Forever we honor. 🇺🇸

05/21/2026

Big pipe. No problem.

This cut involved a 112” OD pipe with a 3/4” wall… handled with one of our large inline diamond wire saw systems and a whole lot of planning before the cut ever started

What we appreciate about projects like this is that they remind people that “portable machining and cutting” isn’t just about the cut itself. It’s rigging. Access. Hydraulics. Alignment. Safety. Logistics. And a crew that can adapt when the real world inevitably laughs at the original plan.

Huge thanks to Reliant Recycling, LLC for trusting Mactech Offshore on this one. These guys do serious industrial recycling and demolition work across the Gulf South.

Can we all take a moment to appreciate how absurdly large a 120” inline diamond wire saw looks when it’s hanging from a crane in the middle of a plant?

You can rely on Reliant, and Reliant can rely on Mactech.

05/20/2026

Weld it… machine it… make it right.

“Hope that cleans up.”

But hope isn’t a machining strategy.

This one needed the bore brought back to spec without removing the wellhead… welded in place, tight access, and a finish requirement that doesn’t leave much room for error.

So we set it up and machined it right where it sits.

Scope included:
• Boring from ~16.4" back out to final spec
• Holding a 125–250 finish through the bore
• Cleaning up the 45° bottom chamfer
• Working around a welded, non-removable assembly

All done with a portable boring and clamshell kit setup to face… dialed in, aligned, and executed in the field.

No shortcuts.
No second chances on alignment.

Just experienced machinists who know how to take something rough… and bring it back right.

The difference between “looks good” and “is right” lives in that last few thousandths.

Proud of this crew.

05/16/2026

“Thank you to the craftsmen that continue to build this great nation.

May God bless you.

May God bless this ship.

And may God bless the United States of America.

While the steel is new… her name carries a great legacy.”

The US Navy Commissioned the USS Cleveland (LCS31) today in Cleveland, Ohio.

Linked below in the comment.

Proud to play part.

Make Ship Happen.

Address

4079 Pepin Avenue
Red Wing, MN
55066

Telephone

+18003281488

Website

http://www.mactechonsite.com/contact/

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