Sawmills: what Claude and GPT would buy

Two AI models chose on their own, with no web access. Nobody tested these products: this is what each one says, and how to check it.

They disagree: Claude chooses Granberg and GPT chooses Wood-Mizer

In Patio, Lawn & Garden, Claude and GPT choose the same brand in 22 of 55 categories.

Claude Opus 5.5 · October 29, 2026

Granberg Alaskan Mark IV (line)

The long-standing reference chainsaw mill: it clamps to the bar of a saw you may already own, adjusts to many board thicknesses, and costs far less than any band mill while handling logs too big for small band mills.

Not for: People milling many logs every season or wanting high board yield with little waste; they should buy a band sawmill. Also not for owners of chainsaws under roughly 70cc.

GPT 6.1 Sol · November 10, 2026

Wood-Mizer LT15

A proven portable band sawmill with useful log capacity, accurate cuts, and strong parts support for small-scale lumber production.

Not for: High-volume operations needing hydraulic log handling or buyers unwilling to handle logs manually.

Claude also lists Wood-Mizer among the brands that matter.

Which one fits you

regular hobby milling with a band mill

Woodland Mills HM126 (line)

A popular, well-supported entry band sawmill with a thin kerf, a modular track you can extend, and an active owner community.

Not for: Anyone who only mills a few logs a year, or anyone without space for a permanent track and log-handling setup.

budget band mill from an established maker

Frontier OS27 (line)

Norwood's budget line gives a manual band mill with real parts and dealer support behind it.

Not for: Commercial sawyers who need hydraulic log handling or powered feed.

edging slabs and squaring small logs

Granberg Mini Mill (line)

Rides along a straight board to make the first flat or edge cut that a full chainsaw mill or band mill setup needs.

Not for: People who want to cut full boards from a log; it is a guide for single cuts, not a slabbing mill.

Check before you buy

Bar length vs log diameter (chainsaw mills). Usable cut width is the bar length minus the clamp space, so choose a bar a few inches longer than the widest log you plan to slab. The mill clamps eat part of the bar at both ends, and buyers often find their bar cannot clear the log.
Chainsaw power. Plan on roughly 70cc or more for wide hardwood slabs; smaller saws only suit narrow cuts. Ripping along the full length of a log loads the saw continuously. Undersized saws bog down, overheat and wear out quickly.
Ripping chain. Use chain ground for ripping, with a shallow top-plate angle around 10 degrees, rather than standard crosscut chain. Crosscut chain cuts slowly and roughly along the grain and makes the saw work much harder.
Kerf and yield. Band mill kerf is much thinner than chainsaw-mill kerf, which is close to a third of an inch. With a chainsaw mill, a large share of every log turns to sawdust. Thin-kerf band mills give noticeably more boards per log.
Band mill capacity. Check both the maximum log diameter and the maximum board width between the guides, plus the track length and whether it extends. Many logs fit the cradle but cannot be cut to the full width you want, and a short track limits board length.
First-cut guide. A chainsaw mill needs a straight rail, such as a ladder-style guide or a straight board, for the first cut. The mill references off the previous flat surface, so a bad first cut carries into every board after it.

Where to find Granberg Alaskan Mark IV

Granberg
Walmart
eBay

Also seen on Amazon.

Shops seen in search results on November 11, 2026. A shop missing here may sell it too. Nothing was checked by a person.

Brands that matter

Granberg: The original Alaskan chainsaw mill maker; parts and accessories are easy to find.
Woodland Mills: Hobby-oriented band mills with modular tracks and good owner support.
Norwood: Long-established portable band mills; Frontier is its budget line.
Wood-Mizer: Industry-standard band mills, from portable to commercial; a large step up in scale.
Logosol: Swedish rail-based chainsaw mills and small band mills.
TimberKing: Portable band mills aimed at serious hobbyists and small commercial operations.

What to avoid

Unbranded chainsaw-mill clones with thin rails that flex, which produce wavy, uneven slabs
Using standard crosscut chain for long rip cuts
Running a small homeowner chainsaw in a mill on wide hardwood
Skipping a first-cut guide rail and trusting a freehand first cut
Milling logs that may contain nails, fencing or other embedded metal without scanning them first

Questions

Chainsaw mill or band sawmill?

A chainsaw mill is cheap, portable and handles very wide logs, but it is slow, loud and wastes more wood. A band mill costs much more and needs space, but it is faster, wastes less and suits regular milling.

Can I use my existing chainsaw?

Yes, if it is powerful enough for the cut width and you fit a ripping chain. Small saws are only practical for narrow logs.

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