What Happens to What You Built
For the owners of magnetics companies
An honest conversation about succession, a harder market, and a way forward that keeps what matters.
A conversation with Tim CostelloCEO, Polymagnet
Where this starts
Customers who still call you by name. People who stayed for years. Know-how that lives on your shop floor and nowhere else.
None of that fits on a balance sheet. It shouldn’t be treated as if it does.
The quiet question
Plenty of owners think about it. Very few get asked.
No obvious next owner, and the next generation may have other plans.
Customers want more capacity and engineering than one shop can carry.
Rare-earth export controls, and bigger consolidators circling.
A harder market
China placed export controls on rare earths and rare-earth magnets.
MOFCOM Announcement 18The controls expanded, for the first time reaching magnet-making equipment and technology.
Arcline’s DwyerOmega precision-measurement platform acquired Lake Shore Cryotronics.
The West needs a magnetics supply chain outside China. And consolidation has already begun.
The usual options
Bought to be resold. Your company becomes a line in someone else’s exit.
A strategic buyer absorbs you. The name comes off the building.
Hold on, and hope the next ten years are kind.
A different path
Join a platform built by an operator.
Not a fund waiting to resell. Not a rival waiting to absorb you. An operator who has already brought an industry’s fiercest rivals onto one shared platform.
What stays the same
On the door, and on the parts.
The team that makes it work.
Relationships you spent decades earning.
The way your shop does things.
A platform works because each company keeps what made it good.
What gets better
The things one shop shouldn’t have to carry alone.
To invest in equipment, people and capacity.
Programmable magnets, backed by 120+ patents.
Overhead carried together, so you can focus on the work.
Western buyers who need suppliers outside China.
A way out that honors what you built.
The technology you’d gain
A MagPrinter prints tiny polarized “maxels” (magnetic pixels) into one magnet, so it can latch, align, spring or hold on command. A conventional magnet can’t.
From Correlated Magnetics Research in Huntsville, Alabama.
Proof, not promises
In 2000, Tim founded Builder Homesite as a consortium of rival national homebuilders, including Lennar, PulteGroup, KB Home and Beazer, all on one shared technology platform.
The people
CEO, Polymagnet
Principal Technologist, Built For the Future
CXO
Co-principal, Built For the Future
Leads experience, brand and go-to-market.
How a conversation works
You tell us about your company. We mostly listen.
What you share stays between us.
If there’s a fit, a plain-language view of what joining could mean for you and your people.
No deadline, no pressure. “Not now” is a fine answer.
An invitation
About what you built, and what you’d want to happen to it.
At MMM 2026 in Honolulu? Tim speaks on Thursday, November 5, at 3:36 PM HST in Coral 1 (talk FC-09), and Polymagnet and CMR are exhibiting.Prepared for Tim Costello
Tap a row to use it. On a phone, swipe left or right.