People ask for a chainsaw sharpener and get handed a powered grinder. A chainsaw chain sharpening jig is not that. It is a hand tool that clamps to the bar and holds a file at the correct angle while you do the work yourself.
The two solve different problems. A jig teaches you the motion and rides in a truck door pocket. A powered machine removes more metal per pass but needs an outlet or a battery.
This guide compares the three bar mount jigs worth buying: the Granberg G-106B, the Stihl 2-in-1 Easy File, and the Timberline sharpener. Each one locks onto the bar. Each one solves the angle and depth gauge problem in a different way.
What Actually Matters in a Chainsaw Chain Sharpening Jig
Before you pick a chainsaw chain sharpening jig, weigh five things.
- Angle repeatability from tooth to tooth
- Whether it handles the depth gauge or only the top plate
- How fast you can set it up on the bar
- Portability and whether it needs power
- How steep the learning curve is for a first time user
A jig only earns its price if it beats freehand filing on repeatability. Speed matters less than getting the same angle on every cutter. If you want how powered sharpeners compare to hand guides, that comparison lives on our main sharpener page.
How the Three Bar Mount Jigs Compare
All three clamp directly to the guide bar. None of them need a battery or a plug.
| Model | Type | Best for | Price band | |
|---|---|---|---|---|
| Stihl 2-in-1 Easy File | Bar mount file guide | Cutter and depth gauge in one pass | around $50 | |
| Timberline Sharpener | Bar mount carbide guide | No file skill needed | around $125 | Price |
| Granberg G-106B | Bar mount file guide | Full angle control | see listing | Price |
Which Jig Should You Buy
Stihl 2-in-1 Easy File
Best Overall
Bar mount file guide | Files cutter and depth gauge together | around $50
The Stihl 2-in-1 Easy File mounts on the bar and files the top plate and the depth gauge in the same pass. The manufacturer lists a built in tolerance adjustment that keeps file depth consistent between strokes. The kit ships with two round files, one flat file, and a holder.
Who it is for: owners who want one motion instead of two separate sharpening steps. Who should skip it: anyone who wants a custom angle beyond STIHL’s guide slots.
Owner reports repeatedly mention one round file staying locked while the other spins loose, which throws off consistency between cutters. Some owners say the file sticks and needs pliers to turn or remove. Others pull the flat file out entirely because it takes too much off the depth gauge on certain chains.
Pros
- Files cutter and depth gauge in one pass
- Compact kit, no power needed
- Reasonable price for an OEM guide
Cons
- File can bind or spin unevenly
- Flat file over cuts depth gauges on some chains
- Angle is fixed to STIHL’s guide slots
Timberline Sharpener
Best for No Filing Skill
Bar mount guide | Carbide cutting bits, not files | around $125
The Timberline sharpener swaps files for interchangeable carbide bits, so there is no file angle to maintain by hand. The manufacturer lists replacement bits in four sizes, which covers most common chain profiles. Owner reports repeatedly mention it is fast to use anywhere, from a tailgate to a stump in the field, since it needs no power source.
Who it is for: owners who want repeatable results without learning file technique. Who should skip it: anyone who wants to dial in a custom angle, since it only cuts at the angles built into the guide.
The fixed angle set is the main tradeoff owners raise, not a build quality complaint. It is a real limit next to a fully adjustable guide like the Granberg. See our dedicated Timberline review for full setup steps.
Pros
- Carbide bits instead of files, no file wear to track
- Genuinely portable, no power needed
- Owner reports call it fast for touch ups
Cons
- Higher price than a basic file guide
- Angle is preset, not adjustable
- Replacement carbide bits add ongoing cost
Granberg G-106B
Full Angle Control
Bar mount file guide | Any angle you set | files not included
The Granberg G-106B is the classic bar mount jig, built from aluminum with no plastic parts. Unlike the other two, it grinds at any angle you set rather than a preset slot, which matters if you run more than one chain profile. Owner reports repeatedly mention a real learning curve, since the design ships without printed instructions and needs frequent readjustment as you work down the bar.
We cover full setup steps and long term ownership notes in our full Granberg breakdown.
Pros
- Adjustable to any filing angle, not locked to presets
- All metal construction
- No power source or batteries needed
Cons
- Steep learning curve for a first time user
- Short handle means gloves are not optional
- Jig needs constant readjustment while filing
Mistakes to Skip
The biggest mistake is buying a jig before checking file size against chain pitch and gauge. Get that wrong and no jig fixes it. Use the size chart to confirm your chain’s pitch before you order anything.
Second is skipping the depth gauge entirely. A sharp cutter behind a tall depth gauge just bounces across the wood instead of cutting into it. Read why filing angle matters more than the tool before you settle on a jig.
Third is grabbing an unnamed clone jig online because it is cheap. Some budget clones work fine, others slip out of the bar mid stroke. If you already know hand filing, how file diameter is chosen for your chain is worth reading first, jig or no jig.
Bottom Line
The bottom line: Start with the Stihl 2-in-1 Easy File if you want one tool that handles the cutter and the depth gauge together. Step up to the Timberline if you want to skip file maintenance and do not mind a preset angle. Keep the Granberg in mind if you want full angle control and can live with a steeper learning curve.
Common Questions
What is a chainsaw chain sharpening jig exactly?
It is a guide that clamps to the bar and holds a file, or in Timberline’s case a carbide bit, at a set angle. You move the file or bit by hand while the jig keeps the angle steady.
Is a bar mount jig more accurate than freehand filing?
For most owners, yes. The jig removes the guesswork of holding an angle by eye, which is the main source of uneven cutters in freehand filing.
Do these jigs sharpen the depth gauges too?
The Stihl 2-in-1 does both in one pass. The Granberg and Timberline focus on the cutter, so depth gauges still need a separate flat file and gauge tool on a regular schedule.
Can one jig fit more than one chain size?
Only if you buy the matching file or bit size for that pitch and gauge. The jig body does not change the fit, the file or bit diameter does.
How often should I touch up a chain with a jig?
Most owners run a light pass every tank of fuel and a fuller sharpening when cutting slows or produces fine dust instead of chips.
Are budget clone jigs worth buying?
Some hold up fine for occasional use. The recurring complaint on cheaper clones is a looser bar clamp that lets the guide shift mid stroke, which defeats the point of using a jig at all.
Sources
- STIHL USA: 2-in-1 Filing Guide product page. https://www.stihlusa.com/en/ap/2-in-1-filing-guide-1027074
- Timberline Sharpener: official product site. https://timberlinesharpener.com/
- Granberg International: G106B chain file guide product page. https://www.granberg.com/product/g106b-file-n-joint-low-profile/