Moisture Mapping A Guide to Wood Moisture Content and Ideal Dryness for Turning

### Wood Moisture Content

Wood moisture content (MC) is the amount of moisture present in wood fibers, expressed as a percentage of the oven-dry weight of the wood. It is a crucial factor in woodworking, as it affects the wood’s stability, strength, and durability.

### How Dry Should Wood Be Before Turning?

For optimal turning results, wood should be dry enough to minimize warping and cracking without being so dry that it becomes brittle. The ideal MC for turning depends on the wood species and the intended use of the turned object.

• **Hardwoods:** Aim for an MC of 6-9% for general turning and spindle turning.
• **Softwoods:** Aim for an MC of 4-6% for general turning and spindle turning.

### Measuring Wood Moisture Content

Moisture mapping is a non-destructive method for measuring MC using a moisture meter. Insert the meter’s pins into the wood and read the digital display for the MC percentage.

### Advantages of Using Moisture Mapping

• Ensures proper wood dryness for optimal turning.
• Eliminates guesswork and relies on accurate measurements.
• Prevents warping, cracking, and other moisture-related issues.
• Maximizes the lifespan and quality of turned objects.

### Conclusion

Moisture mapping is an essential tool for turners who wish to achieve exceptional results. By measuring MC and adjusting it to the proper level, woodworkers can ensure that their turned objects are stable, strong, and durable for years to come.