Trail Designs Inferno Insert Review

Overview

The Trail Designs Inferno is an optional add-on insert for the company’s Ti-Tri line of Caldera Cone stove systems — it works with the Classic, Sidewinder, Fissure, and Fusion variants. It consists of an inverted titanium inner cone and a lower grate system that transforms the Ti-Tri from a stove that merely supports a wood fire into a genuine gasifier/afterburner. If you already own a Ti-Tri and want to take wood burning seriously, this is the one upgrade worth thinking hard about.

Key Specs

Spec	Value
Weight	~40g (1.4 oz) — varies by pot size
Material	Titanium
Includes	Inverted Ti Inferno Insert + lower grate system
Price	$45 standalone / $40 when ordered with a Ti-Tri
Compatibility	Classic, Sidewinder, Fissure, Fusion Ti-Tri systems
Note	Not available for the 400ml pot configuration
Origin	USA-made
Comparison	See how Inferno compares to similar gear

Performance

The Gasifier Difference

Without the Inferno, wood burning in a Ti-Tri is functional but basic — you feed sticks through the cone vents and it works in a pinch. With the Inferno, the system becomes a true gasifier that burns most of the gases emitted during initial combustion, and it burns noticeably hotter.

The physics behind it are worth understanding. In addition to the lower grate providing airflow under the fire, it directs additional fresh air above the fire, creating an “afterburner” effect for more complete combustion. Think of it as a double-wall wood stove that happens to pack inside your pot — the vents on the windscreen cone and the inverted Inferno cone heat incoming air and create a bellows-like effect that makes a very hot fire.

Boil Times and Fuel Consumption

Both the standard Ti-Tri and the Inferno-equipped version can boil 2 cups of water in approximately 5 minutes, 15 seconds

— so raw boil speed isn’t the point. The gains show up in combustion quality.

The Inferno is easier to light, produces less smoke, re-lights more easily if it goes out, and burns wood fuel all the way down to ash.

On fuel consumption, the tradeoff is real. The Inferno is hungry and uses quite a bit of wood — but it is fast. One early tester reported a record boil time of 7.5 minutes for a full liter of water, beating the BushBuddy Ultra. In practical terms, the Sidewinder with Inferno needs a handful or two of finger-sized twigs to cook for about 20 minutes — which is less than you might expect once you get the hang of fuel size and moisture.

Ash and Cleanup

The combustion from the Inferno is remarkably complete, leaving only a small amount of powdery ash that’s easy to dispose of.

The stove will combust so completely that it essentially burns itself out. There’s no fire to put out — just hand-check the ashes to confirm they’re cool, then bury them in a small cat hole.

That’s a genuine LNT advantage over any open campfire and even over less-efficient wood stoves.

Cold Weather and Snow Melting

Multiple users confirm the Sidewinder with Inferno insert is great for melting snow in winter

, where the ability to run on wood rather than alcohol or Esbit can save meaningful fuel weight on extended cold-weather trips.

Durability

The Ti-Tri system with Inferno is extremely well-built. Titanium sheets are very durable — one reviewer reported almost four years of constant use with no flaws, and any minor creases are either irrelevant or can be fixed with a quick bend.

The grate itself is very sturdy. The grate support is more flexible in order to form its ring shape, but has held up with minimal damage that hasn’t affected function.

Complexity and Part Count

This is where the Inferno earns its only real grumbles. The wood gas setup is a multi-piece affair, and adding the Inferno insert and floor makes the process more daunting when you just want a quick cup of coffee. It also adds more weight and complexity to what is otherwise a very simple system. It rewards practice. The first setup in the field feels fiddly; by the third or fourth time, it’s just routine.

Pros & Cons

Pros

• Genuine gasifier performance — burns hotter and cleaner than Ti-Tri sticks-in-the-cone mode
• Burns wood fully to ash — easy cleanup, minimal fire scar

• Larger fuel opening than the BushBuddy, allowing a bigger fuel load — you can step away for about five minutes without feeding

• Everything still packs inside the pot on Sidewinder and Fissure setups
• Fuel-free long-distance travel becomes viable in forested terrain
• Excellent snow-melting capability in winter
• Titanium construction — extremely durable and long-lasting
• USA-made cottage industry product with responsive customer service

Cons

• Adds $45 standalone (or $40 when ordered with your Ti-Tri)

  to an already pricey system
• ~40g weight penalty — not nothing on a gram-counting kit list
• Not available for the 400ml pot configuration
• Wood availability and fire bans are hard limits on usefulness — this is useless in a fire-restricted zone
• Soot on hands and pot is unavoidable — wood burning always means cleanup
• More pieces mean more things to keep track of and potentially lose
• Requires dry, fine twig-sized fuel for best results; wet wood is a legitimate struggle

Who Should Buy This

The Inferno is for the Ti-Tri owner who wants to go fuel-free on longer routes through forested terrain, or who spends meaningful time in environments where wood is genuinely plentiful and fire bans are uncommon. It’s also a strong pick for winter camping where a virtually unlimited fuel supply beats packing alcohol for snow-melting duty. It’s not for the hiker who frequently camps in fire-restricted alpine zones, who values simplicity above all else, or who’s on a gram budget that makes 40g feel like a serious ask.

Verdict

The Inferno insert does exactly what it promises: it takes the Ti-Tri’s already-capable wood mode and turns it into a legitimately efficient, clean-burning gasifier that earns the name. The combustion quality, ash output, and fuel versatility genuinely set it apart from simpler stick-burning setups. The trade-off is real — you’re paying $40, carrying 40g, managing more pieces, and accepting that fire bans render the whole thing a paperweight. If those conditions don’t describe your usual trip style, this is one of the most thoughtful stove upgrades in ultralight cooking.