Sandvik Coromant Cutting Tools: An Honest FAQ From a Shop Buyer

Quick background so you know where this is coming from: I'm the office administrator for a 27-person precision machining shop in Tauranga. I'm not a machinist, and I won't pretend to be one. But since 2020, I've handled roughly $180,000 a year in cutting tool purchases across nine vendors. That means I've placed a lot of Sandvik Coromant orders — and learned a few things the catalogue doesn't tell you.

Here's the FAQ I wish someone had handed me on day one. It answers the questions I get asked most about Sandvik Coromant cutting tools, from what is a reamer bit, to whether a 1500W laser cutting machine can replace a machining centre, to how a non-engineer orders the right tooling. If you're shopping for CNC machining Tauranga providers, or just trying to sound less lost in procurement meetings, this one's for you.

1. What exactly are Sandvik Coromant products?

This comes up more than you'd think, because the brand name gets attached to all kinds of things. Sandvik Coromant doesn't make CNC machines. They make the cutting tools that go into them, plus the tooling systems that hold the tools in place.

The catalogue essentially splits into three groups:

• Turning inserts and tool holders — the replaceable cutting tips used on lathes and turn-mill machines.
• Milling cutters and inserts — for face milling, shoulder milling, and everything in between.
• Drilling, boring, and reaming tools — the hole-making side of the family.

So when someone searches for “sandvik coromant cutting tools,” this is what they're really asking about: the actual cutting edges, not the machines that spin them.

2. What is a reamer bit?

I had to ask this one myself, and it's a fair question. A reamer bit — usually just called a reamer — is a rotary cutting tool used to enlarge an existing hole to a precise size. A drill gets the hole close; a reamer shaves off a small amount of material to bring the diameter into tolerance and leaves a clean surface finish.

If a drawing calls for a hole with a tolerance measured in microns, you're probably going to ream it. Reamers come in high-speed steel, solid carbide, or carbide-tipped versions. In our shop, the solid carbide ones from Sandvik Coromant are what we reach for when a hole actually has to be right.

Reaming isn't a beginner operation, though. The reamer has to enter the hole concentrically, the speed and feed have to stay within the recommended range, and the drill has to leave enough material for the reamer to clean up. Buy one without understanding the process behind it, and you'll likely be ordering another one sooner than you expect.

3. Are Sandvik Coromant cutting tools worth the premium price?

I keep the purchase records, so I know exactly what these tools cost — and I've explained the invoices to finance more than once. Let me be straight with you: Sandvik Coromant is not the cheapest option. There are cheaper cutting tools, and some shops run them successfully.

Here's what I learned the hard way in 2023. The numbers pointed one way; my gut pointed another. A supplier offered us an alternative insert that was 15% cheaper per edge with “equivalent specifications.” It looked great on the spreadsheet. But something felt off in their answers when I asked about carbide grade and coating details.

We compromised and ran a trial on a low-risk job. The tool life wasn't in the same league. By the time I counted the extra changeovers, the higher scrap rate, and the lost machine hours, the “cheap” insert wasn't cheap at all. I still have that spreadsheet. Trust me on this one: the price of the tool is a fraction of the cost of stopping a CNC machine.

Take this with a grain of salt, though. If you're cutting basic materials and machine time isn't a constraint, premium tooling might be overkill. It's a judgment call. What was best practice in 2020 doesn't always apply in 2025. The fundamentals haven't changed — carbide is still carbide — but the grades, coatings, and digital support have transformed what you're actually paying for.

4. Do we need a 1500W laser cutting machine instead of CNC machining?

I've fielded this question three times since 2023, usually from someone who watched a video and decided we were falling behind. Let me break it down in plain terms.

A 1500W laser cutting machine and a CNC machining centre do different jobs. A laser is brilliant at cutting flat sheet metal — thin plate, profiles, holes in sheet, sharp internal corners. It's fast, and there's no tool wear because there's no physical tool touching the work.

What it can't do is create three-dimensional geometry. No pockets, no threads, no turned diameters, no deep holes with tight straightness. That's what CNC machining is for, and that's where cutting tools come in — removing material in a controlled way to make shapes a laser beam can't produce.

If a salesperson tells you a laser will replace your machining centre, they're probably trying to sell you a laser. We're a CNC machining shop in Tauranga, and we quote plenty of jobs that start as sheet metal and finish as machined parts. Laser cutting is a complement, not a replacement.

5. Do I need to understand all those product codes to order the right tool?

Short answer: no, but it helps to know what they're telling you. Most insert codes follow ISO 1832, the international standard for designating indexable inserts. Each letter and number describes something physical: the insert's shape, clearance angle, size, thickness, nose radius, and chip breaker geometry.

The grade code — the part that identifies the carbide grade — is where real performance differences live. Carbide grade selection is a trade-off between hardness, toughness, and heat resistance, as outlined in ISO 513. Two inserts with identical dimensions can perform very differently if they're made from different grades.

I assumed “same specification” meant the same result once. It cost us a day of setup. Our lead machinist asked for a specific insert, I ordered what looked like the same code, and the surface finish was poor. Nothing was ruined, but I learned not to treat codes as interchangeable across brands. Now I send a photo of the old insert and its packaging to our supplier before ordering anything. It takes two minutes and saves us a lot of grief.

Another standard worth knowing: ISO 13399, which governs how cutting tool data is exchanged digitally. If your shop is moving toward digital tool management, that's the standard behind it.

6. How do I buy Sandvik Coromant cutting tools if I'm not a machinist?

This is the practical one, and my answer is: build a process around the people who know.

We didn't have a formal verification process for tool orders at first. The third time we received the wrong quantity or the wrong insert, I stopped blaming the supplier and created a simple order form. It asks for the machine, the job number, the exact part number, and a photo of the current tool if there is one. That one form cut our ordering mistakes down to almost zero.

If you're a buyer, here's what you need to know:

• Find a distributor who answers the phone and actually knows the product line. A good one will double-check your codes before you order.
• Use Sandvik Coromant's online catalogue — it's searchable, and the product pages show compatible holders and applications.
• Take photos of the tools you order regularly. Worn markings are hard to read, and packaging photos save you the guesswork.
• If you're comparing CNC machining Tauranga providers, don't just ask about machine brands — ask what cutting tools the shop runs. It tells you more than the spindle size.

7. What's the biggest buying mistake you've seen?

I'll answer for myself: assuming the invoice price is the real cost. Roughly speaking, the purchase price of a cutting tool is a small slice of its total cost — the rest is machine time, labour, changeovers, and scrap. A tool that lasts 40% longer but costs 15% more is usually the better buy.

I'm not 100% sure of the exact percentages in your shop; every operation is different. But the principle holds up. A machinist friend put it better than I ever could: “Buy the right tool and you'll forget what it cost. Buy the wrong one and you'll remember it for a year.”

So, bottom line: Sandvik Coromant cutting tools are an investment, not an expense. Do your homework, trust your machinists, and verify before you order.