Quick Answer
Vertical split logs tend to burn more efficiently and produce less smoke due to better airflow, allowing for a cleaner and more controlled burn. They also allow for easier tending and adjustments to the fire. This results in hotter flames.
Efficient Combustion
When logs are split vertically, they have a larger surface area exposed to oxygen, which enhances combustion. This increased exposure to oxygen promotes faster and more complete burning of the wood, resulting in hotter flames. To maximize this effect, it’s recommended to split logs to a thickness of around 3-4 inches (7.5-10 cm) to allow for adequate airflow.
Easier Fire Tending
Vertical split logs also make it simpler to adjust the fire and ensure adequate airflow. This can be particularly useful when using a Swedish torch, which relies on a steady flow of oxygen to maintain a high-temperature flame. By adjusting the vertical logs, you can control the airflow and maintain a consistent flame temperature. As a general rule, try to maintain a space of around 1-2 inches (2.5-5 cm) between the logs to allow for optimal airflow.
Practical Considerations
When selecting logs for a Swedish torch, look for straight-grained, dry hardwoods such as ash, beech, or oak. These types of wood tend to burn well and produce a hot, consistent flame. Avoid using logs with knots or other imperfections, as these can disrupt airflow and lead to a less efficient burn. When splitting logs, aim to split them along the natural grain of the wood to minimize the risk of splinters and ensure a clean split.
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