If you've picked up a firewood collection permit this season, you've probably noticed something: the same chain that flies through a fresh-felled log at home seems to labour, snag and dull twice as fast once you're out cutting under permit in a state forest. That's not in your head, and it's not bad luck. Permit and salvage timber is genuinely harder on a chain than the wood most cutting advice assumes you're working with — and almost nothing written about firewood collection actually explains why.
What Makes Permit and Salvage Timber Different From a Fresh-Felled Log
Most chain advice — and most chain design — assumes you're cutting a clean, freshly felled log. Firewood collected under permit rarely looks like that.
Ground Contact Means Grit in the Grain
Under both NSW and Victorian rules, firewood permits only allow you to collect timber that's already down — standing trees are off-limits. That timber has usually been on the forest floor for months, sometimes years. Every day it sits there, it picks up sand, grit and soil, especially around the underside and in bark crevices. None of that is visible before you make the cut, and every bit of it acts like sandpaper on your cutting edge the moment the chain contacts it.
Mixed Seasoning, Mixed Density
Permit timber is also rarely uniform. You'll often be cutting a mix of partially seasoned rounds, waterlogged sections, and fully dry hardwood in the same load — sometimes in the same log. Species like ironbark and red gum are already dense and demanding on a chain when dry; add inconsistent moisture through the same piece and you get a chain working three different cutting problems in a single pass.
How That Damage Actually Shows Up in Your Chain
Grit Wear vs. Fibre Wear
Wood fibre dulls a cutting edge gradually and predictably. Grit does something different — it chips and rounds the cutting corner in a way that standard hand-filing often doesn't fully correct, because the damage isn't a clean, even wear pattern. This is the main reason a chain that "should" still be sharp after a few logs suddenly isn't cutting straight or pulling itself into the wood.
Why a "Sharp Enough" Chain Still Cuts Slow
A chain can pass the fingernail test and still under-perform in permit timber if the depth gauges (rakers) haven't been checked. Raker height controls how aggressively each tooth bites — and in dense, contaminated hardwood, a raker setting that's fine for clean green timber will leave you working much harder for a slower cut, well before the teeth themselves are actually blunt.
Setting Up Your Chain Before You Head Into the Forest
Raker Height for Dense, Dry Hardwood
For dry ironbark, red gum, spotted gum and similar dense eucalypts, a slightly more conservative raker setting than you'd run in green timber gives you better control and less chain grab, without sacrificing meaningful cutting speed. Check raker height every second or third sharpen, not just when the chain feels obviously slow.
Filing Angle and Frequency
Grit-damaged edges need more frequent, lighter touch-ups than fibre-dulled ones — a couple of light passes with a round file every log or two will outperform waiting until the chain feels blunt and then trying to restore it in one heavy session. If you're hitting visible soil or embedded grit, stop and check the edge before continuing; pushing a contaminated edge through more wood compounds the damage.
What to Carry With You
A round file in the correct diameter for your chain's pitch, a flat file or raker gauge, and a stiff brush to clear grit from the bar groove are worth the extra weight in your kit for a full day of permit cutting.
Know Your Permit Conditions Before You Cut
Firewood collection authorisations in NSW run through Forestry Corporation, typically priced between $8 and $30 per tonne depending on location, with collection strictly limited to fallen timber on the ground. Victoria runs its own designated collection seasons through FFMVic, generally autumn and spring windows, with maps published at the start of each season. Both systems prohibit cutting during total fire bans, so check current conditions before you head out — the permit conditions and the cutting conditions are worth checking together.
Sharp, correctly set chain isn't just about cutting speed under permit — it's about fewer stalls, less kickback risk from a chain fighting the wood, and getting your quota home in daylight. Alpine Chain Co engineers chain specifically for what Australian hardwood actually throws at it, ground grit included.