Granberg Alaskan MKIV G778-24 Chainsaw Mill Guide, 24" Bar Capacity — Portable, Aircraft-Grade Aluminum

The Granberg G778-24 Alaskan MKIV is a portable chainsaw mill attachment that converts a chainsaw into a mobile sawmill for cutting boards, beams, and slabs up to 18" wide.

The Granberg Alaskan MKIV G778-24 is a lightweight, heavy-duty chainsaw milling guide built from aircraft-grade aluminum and zinc-plated steel. Designed to clamp to bars up to 24 inches, it gives homeowners, hunters, arborists, and small-scale woodworkers the ability to mill lumber where the tree stands — no trailer or stationary mill required. With adjustable depth control and a durable rail system, this model aims to balance portability with consistent alignment and long-term reliability.

How does the G778-24 attach to my chainsaw and how easy is setup?

Assembly is tool-light and intended for field use: the mill clamps directly to your chainsaw bar without drilling or permanent modification. Most users can attach and align the guide in minutes, then begin milling immediately.

• Clamps to the chainsaw bar — no drilling or welding needed
• Lightweight components for quick transport and assembly
• Simple hardware and clear adjustment markings for alignment

What cutting capacity and precision can I expect from this Alaskan sawmill?

The G778-24 supports bars up to 24" and mills lumber up to 18" wide with cutting depths ranging from 1/2" to 13". An integrated cutting guide and adjustable rails help maintain straight, repeatable passes so you get even boards and predictable milling results.

• Compatible with chainsaw bars up to 24 inches long
• Mills boards from 1/2" to 13" thick and up to 18" wide
• Rail and guide design improves straightness and reduces chatter

What materials and build features make this sawmill durable for outdoor use?

Granberg constructs the mill from aircraft-grade aluminum and zinc-plated steel components to resist bending and corrosion during repeated field use. The robust machining and fasteners are sized to handle the forces and vibrations of chainsaw milling while remaining light enough to carry to remote sites.

• Aircraft-grade aluminum frame for strength-to-weight balance
• Zinc-plated steel hardware to resist rust and wear
• Precision-machined parts for consistent fit and long life

How portable is this unit and what accessories should I plan to use?

The Alaskan MKIV was designed for mobility: it packs down small and can be transported in a truck, trailer, or even carried a short distance into a job site. Pair it with a quality chainsaw bar, sharp chain suited for milling, and simple log supports to get clean passes and manage material safely.

• Compact, lightweight components for easy transport
• Works well with common log supports and saw horses
• Recommended: dedicated milling chain, protective gear, and a stable log bed

Who is this for? The Granberg G778-24 Alaskan MKIV is suited to outdoor builders, homesteaders, landowners, and small-scale woodworkers who need a portable way to turn standing or felled trees into usable lumber. It’s especially useful when hauling logs to a stationary mill is impractical — offering a practical mix of precision, durability, and field-ready portability without permanently altering your chainsaw.