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OUR CRAFT

Fire, engineered with purpose.

Every ESFIRE product begins with the same element — fire. What changes is how we guide the air around it, concentrate the combustion and put the resulting heat to work.

AIRFLOWFUELCOMBUSTIONHEATEXHAUST
01 / DOUBLE-WALL COMBUSTION

Smokeless Bonfire 18"

A continuous route carries fresh air from the lower vents into the fire and through the double-wall cavity, where it gains heat before returning near the upper combustion zone.

Air inCombustionHot gasRadiant heat
ESFIRE Smokeless Bonfire airflow diagramCross-sectional illustration showing fresh air entering through lower vents, rising through the double-wall channel and returning through upper secondary air openings.PRIMARY COMBUSTIONSECONDARY COMBUSTION ZONELOWER AIR INTAKEDOUBLE-WALLAIR CHANNELPREHEATED AIR ↑SECONDARY AIR PORTSRADIANT HEATHOT GAS / REDUCED VISIBLE SMOKEENGINEERING ILLUSTRATION • NOT TO SCALE
  • Lower air intake
  • Primary combustion
  • Double-wall air channel
  • Preheated air
  • Secondary air ports
  • Secondary combustion zone
  • Radiant heat
HOW THE SYSTEM WORKS

Two combustion zones. One continuous airflow.

The Smokeless Bonfire uses its geometry to keep fresh air moving through the fire. Air entering close to the base supports the primary burn, while a second stream travels through the double-wall cavity and gains heat. Near the upper rim, that preheated air is introduced back into the combustion zone, encouraging a secondary burn of hot gases above the wood.

01

AIR ENTERS

Fresh air enters through the rounded lower ventilation slots.

02

AIR PREHEATS

A second stream rises and gains heat inside the double-wall channel.

03

SECONDARY BURN

Preheated oxygen returns through upper ports near the hot gases.

04

HEAT RADIATES

Combustion warms the open flame and surrounding metal body.

PRACTICAL NOTE

For the secondary burn to develop properly, the fire needs to come up to temperature. Dry seasoned wood and unobstructed airflow give the system its best operating conditions.

ANATOMY / 01

Built around the burn.

Only the visible, functional parts of the real product are identified here.

Smokeless Bonfire 18" product anatomy01020304050607
  1. 01Top rim
  2. 02Inner combustion wall
  3. 03Secondary air ports
  4. 04Outer wall
  5. 05Lower intake vents
  6. 06Carry handle
  7. 07Base / feet
Smokeless Bonfire 18" geometry detail
WHY THE GEOMETRY MATTERS

The shape is part of the function.

The space between the two walls creates a defined route for incoming air to rise and gain heat before returning to the upper combustion zone.

FORM / AIR / FIRE
FROM COLD START TO WORKING FIRE

The fire finds its path.

01

IGNITION

Kindling establishes the first flame and begins drawing air through the lower openings.

REAL PRODUCT MEDIA

See the principle in practice.

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CRAFT / MANUFACTURING

Designed as airflow. Built as metal.

Combustion engineering becomes physical through carefully cut openings, formed steel, joined components, functional hardware and a finish prepared for real fire.

01

CUT

Ventilation openings, panel edges and locking details begin as deliberate cuts.

02

FORM

Flat metal becomes the body, wall, chamber or structural panel the fire needs.

03

JOIN

Tabs, joints, handles and formed parts establish the working geometry.

04

FINISH

Surfaces are prepared for use while every opening and edge remains functional.

05

FIRE

The physical object meets the airflow and heat path it was designed around.

REAL WORKSHOP FOOTAGE

The drawing only matters when the metal agrees.

Manufacturing decisions preserve the openings, paths and structural relationships that make each ESFIRE product work as intended.

OPERATING REALITY

Real fire deserves clear thinking.

  • Use outdoors in a suitable open-air location on a stable, non-combustible surface.
  • Use dry, suitable wood and keep every lower intake and upper air opening unobstructed.
  • Keep combustible materials away from the exposed flame and hot metal surfaces.
  • Let the body and ash cool completely before moving, emptying or cleaning the pit.
NEXT / 01

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