Janka hardness test
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The Janka hardness test, created by Austrian-born American researcher Gabriel Janka, measures the resistance of a sample of wood to denting and wear. It measures the force required to embed an 11.28-m
Janka hardness test
Lignum vitae
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Lignum vitae, also called guayacan or guaiacum, and in parts of Europe known as Pockholz or pokhout, is a wood from trees of the genus Guaiacum. The trees are indigenous to the Caribbean and the north
Janka hardness test
…Schinopsis brasiliensis, Quebracho, Barauna, Chamacoco 4,800 lbf (21,000 N) Schinopsis balansae, Quebracho Colorado, Red Quebracho 4,570 lbf (20,300 N) Lignum vitae, Guayacan, Pockholz 4,500 lbf (20,000 N) Anadenanthera colubrina var. cebil, Curupay, Angico Preto, Brazilian Tiger Mahogany 3,840 lbf (17,100 N…
Round mallet of lignum vitae, all sapwood
Wood of Bulnesia sarmientoi
Pete Seeger with his extra-long, lignum vitae banjo neck
A hand plane with a lignum vitae sole, likely not actual Guaiacum but Bulnesia, and a pearwood body