The Handle Decision

Why G10

Spend any time comparing knives and the handle materials start to blur together — titanium that feels expensive the second you pick it up, carbon fiber with its woven high-tech weave, machined aluminum in every anodized color you can name, glass-reinforced nylon molded by the millions. Next to that lineup, G10 is the quiet one. It doesn't shine and it doesn't show off, so people assume it's the budget choice — the material you settle for.

It isn't. I've specified handle materials for production knives, held every one of these in finished form, and carried them long enough to learn what each one actually does after the showroom feeling wears off. The MERINO runs machined G10, and that was a decision made against the alternatives — not a default I fell into.

There are lighter handle materials than G10. There are cheaper ones. Neither of those arguments won — and here's the honest reason why.

The Factual Layer

What G10
Actually Is

G10 is a high-pressure fiberglass laminate. Layers of woven glass cloth are soaked in epoxy resin, then compressed and cured under heat until they fuse into a single dense, solid block — which then gets machined into a handle. If you want the full breakdown of how it's made and the properties that fall out of it, I covered that separately in the post on what G10 actually is. This one is about why I chose it.

The short version of what matters: G10 is hard, dimensionally stable, and almost completely indifferent to water, sweat, and solvents. It doesn't corrode, because there's nothing in it to corrode. It can be machined with an aggressive texture that bites into the hand. And it's light — lighter than titanium, lighter than aluminum — without being fragile about it. In the least exciting way possible, it's a material that simply keeps doing its job and asks for nothing back.

The Decision

How the Handle
Gets Chosen

A handle material isn't chosen by what it offers — every option here offers plenty. It's chosen by matching what each one is best at to what the knife is actually for. It's the same logic that settled the blade — why the MERINO runs CPM S35VN was a decision made exactly this way. Four materials made the short list before G10, and each is the right answer to a question the MERINO simply wasn't asking.

• Titanium

  Earns its reputation — corrosion-proof, strong, and unmistakably premium in the hand. Its defining trait is mass: titanium is the densest option here, so the same handle weighs more in titanium than in G10. A heavier, more substantial knife is a real goal — just a different one than a knife built to vanish in a front pocket.

• Carbon Fiber

  The lightest serious option there is, and to many eyes the best-looking. Where it shines is a build chasing the absolute minimum weight. The trade is cost, and a toughness tuned for stiffness. On the MM, G10 had already cleared the weight bar the design needed — so carbon fiber's gains had no room to pay for themselves here. On a knife with a different brief, that calculus flips.

• Aluminum

  Machines cleanly, stays light, and takes anodized color like nothing else on this list. That makes it exactly right for certain knives. Its defining trait is thermal — metal moves temperature, so an aluminum handle tracks the weather more than a composite does. For a knife meant to sit unnoticed against the body all day, a temperature-neutral handle fit the MM's job.

• Glass-Reinforced Nylon (GRN)

  The workhorse of the industry — and I've built a lot of knives out of it. Injection molded, GRN is light, genuinely tough, shrugs off impact, and at volume nothing beats its economics. The trade is craft: a molded handle is formed in a tool, where machined G10 is cut from solid stock, which reads as more rigid and more dense in the hand. Both are right answers to different questions.

None of these is a lesser material. Each is the best answer to a particular question. G10 happened to answer the MM's question — disappear into a pocket, all day, every day, and never ask for anything back — better than the rest. Light without being fragile, rigid without being heavy, grippy wet or dry, and indifferent to water, sweat, and time.

What settled it for the MM wasn't a spec sheet — it was a wet hand. Machined G10 can be cut with an aggressive texture that holds a soaked or sweaty grip, and because that texture is milled into the solid rather than coated onto it, it doesn't wear away. The day you actually need a knife is rarely the dry, climate-controlled one.

What It Means For You

A Year In

Here's where the decision shows up in your hand. A year of pocket carry — keys, coins, sweat, rain, the occasional drop onto a hard floor — and a G10 handle grips and looks the way it did the day it arrived. It doesn't corrode, doesn't soak anything up, and doesn't change with the weather. There's nothing to baby and nothing to maintain.

One of our testers once ran a knife through a full laundry cycle, forgotten in a pocket. The handle came out the other side exactly as it went in. That's not a stunt — it's just what the material does. Water isn't a threat to G10; it's a non-event.

That's the entire argument for it. A handle you never have to think about is a handle that never hands you a reason to leave the knife at home — and a knife you actually have on you is the only kind that has ever mattered to me.