Density is the whole idea.

Ordinary charcoal is a piece of wood with the water and volatiles cooked out — light, porous, quick to go. CHARBLOX starts as sawdust from whole-lumber milling, pressed under heat until it is far denser than any branch, then carbonized. Same carbon. Far more of it per cubic inch. That is where the hours come from.

Anatomy of a log

The shape is not decoration.

ACentral channel. Draws air through the log, so it ignites from inside and burns evenly instead of only from the surface.

BPressed body. The density is the burn time. Slower to catch, far slower to leave — 3–5× the burn of average charcoal per pound.

CSix faces. Logs nest into a tight bed with no gaps and no hot spots. Broken pieces burn the same — more surface, same density.

Hardwood

Flavor and the long hold.

Mixed hardwood sawdust gives the deep smoke you expect from a wood fire, with a steady mid-high plateau. Three to four times the burn of average charcoal. Built for the smoker, the kamado, the closed oven.

Classic Hardwood →

Bamboo

Heat in the binchotan register.

Bamboo carbonizes harder and cleaner: high radiant heat, almost no smoke, four to five times the burn of lump. It behaves like Japanese white charcoal at a fraction of the cost: an ogatan-style log, the pressed hexagonal charcoal Japanese grills have used for decades. For robata, konro, yakitori and the hard sear. Binchotan vs. ogatan vs. lump →

Dragon Fire Bamboo →

Against what you burn now

Per pound, in use.

	CHARBLOX	Lump	Briquettes	Binchotan
Burn per lb	3–5× average	Fast, inconsistent	Moderate	Long
Ingredients	100% hardwood or bamboo	Mixed wood, mixed sizes	Wood + binders + additives	Ubame oak
Heat distribution	Even — uniform logs	Hot spots	Even	Even
Smoke / sparks	Near none once lit	Sparks, smoke	Chemical smoke at light	None
Ash	Low	Moderate	Heavy	Low
Reusable	Yes — choke & relight	Partially	No	Yes
Time to temperature	Slower — by design	Fast	Moderate	Slow
Cost per lb	$3–5	$1–3	$0.50–1.50	$10–15
Sourcing	Recycled lumber sawdust — no trees cut	Harvested	Harvested	Harvested, imported

Cost-per-pound figures are typical US retail ranges as of 2026; CHARBLOX range reflects 5 lb to 20 lb retail pricing. Cost per service, not per pound, is the number that matters — see the load planner on the home page.

Service protocol

Run it like equipment.

Dense fuel lights differently. Give it the chimney and a few extra minutes; it pays you back for hours.

01 · LightChimney, one firestarter

Never fluid. Don't overcrowd the chimney — airflow is what gets dense logs going. Start before prep.

02 · WaitLet it grey over

Longer than lump. Wait until the top logs are ashed at the edges before you dump the chimney.

03 · BedNest the hex faces

Stack tight for an even bed. Set your temperature at the vents, then leave the bag alone.

04 · CloseChoke and keep

Shut the vents or move coals to an airtight can. What's left is the first load next time — count it in your fuel cost.

Pro tip from a purchaser: put partly-burned logs at the bottom of the chimney with new logs on top — the used ones catch faster and light the rest. Aiden · Costco · 46 found helpful

Source

No tree is cut.

Every log began as sawdust from whole-lumber milling — a by-product that would otherwise be waste. We press it, carbonize it and ship it from Los Angeles. No chemicals, no binders, no accelerants, and nothing felled to make it. Count what your kitchen saves in the Sawdust Ledger →

0Additives

0Trees cut

5×Burn per lb

Minority Business Enterprise CHARBLOX is made by Terra Earth Inc., a Minority Business Enterprise (MBE). For supplier-diversity programs and procurement teams, ask us for our MBE documentation.

Terra Earth Inc. · MBE · Los Angeles, California

Biochar

Carbon you could bury.

The carbon in every CHARBLOX log meets biochar-grade specs: more than 90% carbon, with a hydrogen-to-carbon ratio of 0.27.

>90%Carbon content

Almost pure carbon. Fewer volatiles left to smoke, which is why it burns clean once lit.

0.27H:C ratio

The standard test of how stable carbon is. Biochar guidelines look for an H:C ratio below 0.7. The lower it is, the longer the carbon lasts.

0Binders or additives

Only recycled hardwood or bamboo sawdust goes in, so only clean carbon comes out.

How it’s made

The sawdust is pressed into logs, then carbonized by pyrolysis: heated in a low-oxygen chamber so it turns to carbon instead of burning. The wood’s water and volatile gases are driven off and a dense, stable carbon skeleton stays behind.

Why the structure matters

Pyrolysis leaves a highly porous carbon, full of micro- and macro-sized pores. In soil, those pores hold water, nutrients and beneficial microbes. Carbon this stable can stay locked in soil or building materials for hundreds of years instead of returning to the air.

Specs: carbon content and H:C ratio of CHARBLOX carbon. Carbon is stored long-term only when the char goes into soil or materials, not when it’s burned as fuel. For biochar or bulk carbon inquiries, contact us.