It comes from South America and its use is strictly regulated. The botanical term for guaiac is Guajacum. Depending on its origin, the term coulteri (Mexico) or officinale (Caribbean) is added.
Known to us for centuries, this wood was also called the wood of life (Lignum vitae) because its resin was used in medicine, particularly in the fight against smallpox. Very oily and of high density, guaiac is known for its high resistance to abrasion.
The wheels of steamboats, for example, pivoted on guaiac wood. The wood is known for its low thermal conductivity.
It is therefore not surprising that when braking the rope on guaiac, with the SpiderJack, a minimum of heat is transferred.
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