How To Get Rid Of Log On One Side

How to Get Rid of Log on One Side: A Complete Guide to Processing Uneven Timber

Discovering a log with one side significantly larger, damaged, or irregular than the other is a common challenge in woodworking, logging, and sustainable building projects. This "log on one side" scenario—often called a waney edge, slab, or unsquare timber—doesn't have to be discarded. With the right techniques, you can transform this challenging material into beautiful, functional, and structurally sound pieces. This guide provides a detailed, step-by-step approach to assessing and processing logs with uneven sides, turning a perceived defect into a unique asset.

Understanding the "Log on One Side" Phenomenon

Before beginning any work, it's essential to understand why a log has one side that is different. This irregularity typically stems from the tree's natural growth pattern. A log cut from the base of a tree on a slope will have a wider, often flatter side where it contacted the ground, while the opposite side is more rounded. On the flip side, similarly, logs with large knots, bulges, or rot on one face present the same core problem: an imbalance in dimensions. The goal of processing is not necessarily to make the log perfectly square, but to create a stable, usable beam or board with a consistent cross-section, removing the defective or excessive material from the problematic side.

Step 1: Assessment and Planning

The first and most critical step is a thorough assessment. Never rush to the saw. Place the log on stable supports and examine it from all angles.

• Identify the Defect: Is the "one side" issue caused by a waney edge (the natural curved bark side), a large knot cluster, rot, or a physical injury like a gouge? The treatment differs. Rot must be removed entirely to prevent spread. A waney edge is often left intentionally for aesthetic character in certain styles.
• Check for Straightness: Use a long, straight spirit level or straightedge laid along the length of the log on both the "good" and "bad" sides. This reveals if the irregularity is constant or if the log has a sweep (a gradual curve) or bow.
• Determine the Desired End Product: Are you aiming for a square timber for a timber frame joint, a flat plank for a tabletop, or a rustic beam with character? Your final goal dictates your cutting plane.
• Mark Your Reference Line: Using a chalk line or a long pencil line, snap a straight reference line along the length of the log on the side you intend to be your primary, finished face (often the side with the fewest defects). This line will guide all your cuts and removals.

Step 2: Tool Selection for the Job

The tools you choose depend on the scale of the project, your skill level, and the precision required.

• For Rough Removal & Shaping:
  • Chainsaw: The most common tool for initial bulk removal. A chainsaw mill (or Alaskan Mill) attachment provides more control for slabbing.
  • Broadaxe or Felling Axe: Traditional tools for hewing a round log to a flat surface. They offer excellent control and are ideal for removing large, uneven sections on a stationary log.
  • Reciprocating Saw (Sawzall): Useful for cutting away large, isolated chunks of rot or knot wood before final squaring.
• For Precision Squaring:
  • Portable Sawmill (Band Mill): The gold standard for precision. It can slice logs into uniform planks or beams, perfectly accommodating an irregular starting shape by adjusting the cutting path.
  • Circular Saw with Guide Rail: For shorter logs, a large circular saw on a stable guide can make precise, straight cuts.
  • Hand Plane (Jointer Plane): For final truing of a smaller, already-sawn beam. A jointer plane (typically 22-24 inches) is designed to flatten surfaces.
• Essential Support & Safety Gear:
  • Log Holds or Cradle: Prevents the log from rolling while you work.
  • Heavy-Duty Sawhorses: Must be rated for the log's weight.
  • Personal Protective Equipment (PPE): Chainsaw chaps, safety glasses, hearing protection, gloves, and steel-toed boots are non-negotiable.

Step 3: The Primary Processing Methods

Method A: The Hewing Technique (Traditional & Effective)

This ancient method is perfect for converting a round or irregular log into a square timber with a flat face.

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1. Secure the Log: Place the log horizontally in a sturdy cradle or on sawhorses.
2. Mark the Lines: From your reference line on the "good" face, use a framing square to measure and mark perpendicular lines around the log's circumference at both ends. Snap a chalk line between these marks on the side you need to remove (the "log on one side"). This is your hewing line.
3. Score the Line: Using a broadaxe or heavy felling axe, make a series of deep, downward chops along the hewing line, about 6-12 inches apart. These scores define the depth of the removal.
4. Hew Away the Waste: Stand on the log (if secure) or beside it. With the broadaxe, swing in a controlled, slicing motion between the scored lines, removing large chunks of wood. Work from the top down, following the grain. The goal is to remove all wood outside your hewing line.
5. Refine with a Drawknife or Plane: Once the bulk is gone, use a drawknife to remove the remaining ridges and smooth the surface, working with the grain. For a perfectly flat finish, follow with a jointer plane.

Method B: Slabbing with a Chainsaw Mill

Ideal for producing wide planks from a log with a significant waney edge.

1. Set Up the Mill: Assemble your chainsaw mill guide rails on top of the log. The first cut is the most critical. You will cut a slab off the side you want to remove.
2. Make the First Cut: Set the depth of cut on your chainsaw to slightly more than your desired final plank thickness plus the width of the saw kerf (the cut width). Carefully guide the chainsaw along the reference line on the "bad" side. This first slab is your waste or a rustic piece with bark edge.
3. Remove the Slab: The large, irregular slab will fall away. You now have a flat surface on that side.
4. Cut Subsequent Planks: Reset your guide to the desired thickness and make parallel cuts from your newly flattened surface. You