Granberg Alaskan MKIV Chainsaw Mill Guide — 36" Bar Support, Portable Aluminum Sawmill for 30" Boards

The Granberg G778-36 Alaskan MKIV is a portable chainsaw mill attachment that converts a chainsaw into a field-ready sawmill for cutting boards, slabs, and beams up to 30" wide.

Compact and robust, this chainsaw milling guide uses aircraft-grade aluminum and zinc-plated steel to give backyard woodworkers, homesteaders, and contractors a travel-ready milling solution. It clamps to your chainsaw bar without drilling, supports bars up to 36 inches, and lets you mill timber from 1/2" to 13" thick. Built in the USA by experienced woodworkers, the G778-36 is designed for repeatable alignment and long-term durability when processing logs at the harvest site.

How does the G778-36 attach to my chainsaw and set up on a log?

Installation is tool-free and straightforward: the mill clamps to your chainsaw bar and locks in place with adjustable hardware. No permanent modifications to the saw are required, and the lightweight frame assembles quickly so you can mill where the tree stands.

• Clamps directly to bars up to 36"—no drilling or welding.
• Adjustable rail and guide keep blade height consistent for even cuts.
• Light, bolt-together components for easy transport and field assembly.

What lumber sizes and depths can I mill with this guide?

The Granberg MKIV supports milling widths up to 30" and cutting depths from 1/2" up to 13", giving you flexibility for thin boards or substantial beams. Its integrated cutting guide and stable rail geometry help deliver repeatable passes for consistent thickness across a log.

• Mills boards, slabs, and beams up to 30" wide.
• Depth control from 0.5" to 13" per pass with repeatable alignment.
• Works with standard chainsaw bars and common bar lengths up to 36".

Is the G778-36 durable enough for heavy use and outdoor conditions?

Yes—critical components are made from aircraft-grade aluminum and zinc-plated steel for a balance of light weight and corrosion resistance. The design emphasizes strength where it matters, giving you a mill that holds alignment and stands up to repeated field use.

• Aircraft-grade aluminum frame for stiffness and reduced weight.
• Zinc-plated steel hardware resists rust from weather exposure.
• Precision-machined parts for stable alignment over many cuts.

How portable is this mill for remote jobs or trail access?

The Granberg G778-36 is engineered to be carried to remote sites: its bolt-together construction breaks down for transport and fits in pickup beds, trailers, or even on shoulder packs for shorter carries. Because it uses your chainsaw as the power source, there’s no heavy engine or separate trailer required.

• Panels and rails disassemble for compact transport and storage.
• No separate power unit—uses your chainsaw engine on site.
• Light enough for one or two people to carry to harvest locations.

Who is this for: The Granberg G778-36 is aimed at DIY woodworkers, homesteaders, cabin builders, and professional outdoorsmen who want to mill timber on location without hauling logs to a stationary sawmill. If you need a rugged, American-made attachment that converts a chainsaw into a repeatable portable sawmill for boards, slabs, or beams, this mill offers a precise, field-ready option.