Wood splitting (riving) is an ancient technique used in carpentry to make lumber for making wooden objects, some basket weaving, and to make firewood. Unlike wood sawing, the wood is split along the grain using tools such as a hammer and wedges, splitting maul, or froe.
In woodworking carpenters use a wooden siding which gets its name, clapboard, from originally being split from logs—the sound of the plank against the log being a clap. This is used in clapboard architecture and for wainscoting. Coopers use oak clapboards to make barrel staves.
Some Native Americans traditionally make baskets from Black ash by pounding the wood with a mallet and pulling long strips from the log.
Log splitting is the act of splitting firewood from logs that have been pre-cut into sections (rounds). This can be done by hand, using an axe or maul, or by using a mechanical log splitter. When splitting a log by hand, it is best to aim for the cracks (called checks), if there are any visible. Some types of wood are harder to split than others, including extremely hard woods, as well as types like gum which your axe will often bounce off of, and cherry, which is typically so twisted it's near impossible to get a clean split, and elm. Any type of wood, being thick or tall, having large knots or twisted grain can make it difficult to split. In some cases it is easiest aim for the edges and split the log into multiple pieces.
The advantages of splitting wood along its grain, rather than sawing it is that the wood is much stronger. Due to this, it was historically used for building ships (e.g. drekars) and traditional skis. A defining feature of shakes, which are like shingles, are that they are split rather than sawn and because the cell structure of the wood remains intact may be more durable, and similarly trunnels when split are stronger than when sawn.
- "Riving" def. 1.b. Oxford English Dictionary Second Edition on CD-ROM (v. 4.0) © Oxford University Press 2009
- "Clapboard" def. 1., 2., and 3. Whitney, William Dwight, and Benjamin E. Smith. The Century dictionary and cyclopedia. vol. 2. New York: Century Co., 1901. 1027. Print.
- Brett & Kate McKay. "How to Split Firewood Correctly". The Art of Manliness. Retrieved 2014-02-11.
- Happy People: A year in the Taiga,