The metal fab behind electric vehicles

Bringing powder coating in-house

5 min read

Over recent months, we've fired up our first powder coating line, and we're already deep into planning the second.

We know most of you reading this won't be setting up a powder coating facility any time soon. But we also know plenty of you, like us, find the thinking and the problem-solving genuinely interesting. So here's a quick look at what bringing powder coating in-house actually involves, and why we didn't just build it from a standing start.

Buying a business, not just equipment

There's a faster way to add a new capability than building it from scratch: acquire a business that already does it well, and is at a stage where the owner is ready to sell.

That's the approach behind most of National Industries' successful growth over six decades. Rather than chasing every new capability by bolting on unfamiliar equipment and hoping for the best, we've grown by bringing proven businesses into the fold, each with its own track record, its own customers, and most importantly, its own people who know the work.

With powder coating followed that same pattern. The operation we brought in had a real history in Victoria, and that history was the asset. The ovens and the booths matter, but they're not the hard part to get right.

The hard part is the years of judgement that come from running a line every day. Knowing why a part hangs a certain way, why a particular substrate needs longer in pre-treatment, what a finish should look like before it's even out of the oven. You can buy equipment off a shelf. You can't buy that.

Integration without dilution

Acquiring a business is the easy bit, on paper at least. Making it actually work without watering down anyone's standards is where the real planning happens.

Our approach has always been to bring people and processes in, not just paint over them with how we already do things, with the exceptoin for our quality standards, of course.

That means understanding why the existing team does something a certain way before deciding whether to change it. It means qualifying the new operation against the same expectations we hold everywhere else in the business: the usual run of pre-treatment checks, testing, and  corrosion benchmarks that any serious finishing line gets measured against. Not because anyone doubted the work, but because consistency across every part of the business is the entire point of moving towards a one-stop-shop.

It also means being patient about it. A second line doesn't get planned until the first one is humming, properly tested, and the team running it is confident, not just capable. Rushing a second line in before the first has proven itself is exactly how standards slip, and if you know us, you know our standards are high and they guide everything we do. 

There's also a another side to integration that doesn't show up on a project plan: trust. The people who've spent years running a powder coating line know its quirks better than anyone walking in from outside ever will. Bringing them into a bigger business only works if that knowledge is treated as valuable, not as something to be replaced by a manual.

So as much as this is about ovens, booths and pre-treatment tanks, it's just as much about making sure the people behind the equipment feel like they've joined something, not been absorbed by it. Get that wrong and you can have the best line in the state and still end up with inconsistent results, because the people who actually understand it have checked out.

Why finish it ourselves

Strategically, this one's straightforward. We already take a part from raw material through pressing, laser cutting, welding and forming, and we also have a long history of high-quality spring making. Powder coating was the obvious piece that used to mean handing a finished part to someone else, waiting in their queue, and hoping their standards matched ours.

That handoff has always been the weak link in an otherwise tight process. You can control tolerances down to a fraction of a millimetre on your own floor, then send the part out the door and lose visibility the moment it leaves. Lead times become someone else's problem to manage. Quality becomes someone else's standard to meet. And if something doesn't come back right, you're the one explaining the delay to your customer, even though the mistake happened somewhere you never saw.

Now it doesn't. One supplier, one conversation, and a finished, coated part that's been under our eye the whole way through. For anyone managing a project with a deadline, that's not a nice-to-have. That's fewer handoffs, fewer chances for something to go sideways, and one phone call instead of three.

What this actually looks like long term

None of this happens overnight. Line one is running. Line two is being planned with the same care, not rushed just because the first one worked.

What we'd ask you to take from this isn't the technical detail of a coating line, it's the principle behind it.

Growth that protects quality is all about bringing in people who know what they're doing, taking the time to understand why they do it that way, and only then starting to improve on it.

Talk to our team about how powder coating now fits into a fully integrated build.