trunnel


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treenail

A long pin of hardwood used in timber-framed houses to secure a joint between two planks or timbers; also called a trenail or trunnel.
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In his restorations, he has even replaced old wooden trunnels (the nails or wooden pegs) with like kind in sites where it snows heavily in winter.
Timberframing, also known as post-and-beam construction, is an age-old building technique in which the frame of the home is crafted from solid timbers that are attractively assembled, using modern fasteners and mortise and tenon jointery secured with oak pegs called "trunnels." The Timberframe Plan Book contains 30 floor plans; tips from some of the field's premier manufacturers, builders, and designers; a glossary; and a resource guide.
The post and beam frame required no nails, but was fastened together with elegant mortise and tenon joints locked into place with stout wooden pegs called trunnels or "treenails." The beams were shaped by hand with broad axes, adzes, and chisels; cut with hand saws of various types, and drilled with breast drills, braces, bits, and augers.