Make a Firewood Cutting Jig – Processor for Sawmill Offcuts

Build your own Firewood Cutting Jig! See the Video on YouTube and download the Plans.

Make a Firewood Cutting Jig – Processor for Sawmill Offcuts

Background for the Firewood Cutting Jig Project


Built a Firewood Cutting Jig! This Firewood Cutting Jig is a fast and easy way to cut firewood from small stripped branches or sawmill slab wood. Can be used as a processor of slab-wood sawmill off-cuts too.
When we purchased this home and property there was a load of old tools and assorted building materials that we asked to be included in the sale. The house, workshops, and out buildings were built sometime in the 1950’s by the owner, an Austrian carpenter who settled here after World War II. From what we have heard, he cleared this land by hand, and he was a meticulous craftsman. His workmanship is evident in the quality of the fit and finishing of the house he built.


In our back field I came across an old Firewood Cutting Jig and I have used it a few times to cut wood stove length material to heat the house. It is a great firewood processor, of a sort. Over the years, this jig has suffered from the weather here on the west coast and the slots can get cut away after each use.

Build a Firewood Cutting Jig - DIY Wood Processor
Watch this video on YouTube.

How to cut firewood fast:

Old Firewood Cutting Jig
Old Firewood Cutting Jig

I thought it would be a good time to build a new firewood cutting jig based on this design. It’s simple, portable, and very efficient at turning long branches or slab wood off-cuts from a sawmill into firewood. You simply load it up, drop the roped weights over the stack, and run your chainsaw down the slots.
This is a good option to hold wood while chainsawing. I find it one of the best ways to cut branches for firewood. And, it’s a portable chainsaw wood cutting rack.


An excellent log holder for cutting firewood.

The firewood jig is made from these main components: A front and rear support made from 4x4 lumber. A base made from a pair of 2x10’s. Sides made from 1x8’s. Handles made from a 2x6. And weights attached with ropes made from salvaged materials.

MAN about TOOLS - firewood cutting jig - finished build
firewood cutting jig – finished build

Firewood Cutting Jig – The Supports

Start with the two bases made from a 4x4. For the rear base I’ll need lawnmower wheels, a half inch steel axle rod, some galvanized washers, small mending plates, and cotter pins.

parts
firewood cutting jig – parts

With one wheel on the axle, line up the edge of the tire to the end of the rod. Make a pencil mark for the cotter pin hole. Repeat on the other end.

MAN about TOOLS - firewood cutting jig - mark axle
mark axle

Cut a V groove into a scrap piece of lumber to hold the round axle rod for the next few operations.

firewood jig - cut v-groove
cut v-groove

Use a center punch to create a small divot in the steel rod to help guide the drill bit. Use a hardened concrete nail if you don’t have a punch.

MAN about TOOLS - firewood cutting jig - center punch axle
center punch axle

Drill a hole in the axle with a 1/8″ metal drill bit. Use a file to smooth down any burrs.

drill axle hole
drill axle hole

Slide a washer on the axle, the wheel, the opposing washer, and slide a cotter pin into the hole.

mark axle inner hole
mark axle inner hole

Mark the locations for the inner cotter pin holes, then center punch, drill, and file away any burrs.
Assemble the wheels onto the axle but don’t bend over the cotter pins just yet. Measure the distance between the two inner cotter pins, subtract half an inch, then transfer that measurement to a 4x4.

layout rear support
layout rear support

Cut this rear support to that length. Measure the front support according to the plans, and cut that as well.

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