“…The main problems regarding the use of Hevea brasiliensis (rubberwood), particularly as lumber, are due primarily to their intrinsic characteristics, such as drying defects such as warp, twist, bow, and splitting during the drying process [1][2][3][4] ; fast biodegradation and susceptibility to fungi and insects after felling [2,5] ; and high levels of growth stress. [4,6,7] Steaming wood is a technique that may alleviate the problems during the sawing and drying processes, and it is applied for a variety of other purposes, such as to reduce growth stress levels, [8][9][10] change color, improve the dimensional stability, [11][12][13][14] increase the permeability [15] and drying rate, and reduce the initial moisture content (IMC), moisture gradient, and drying defects. [1,3,13,14,[16][17][18][19] When steamed at 54°C, the H. brasiliensis logs produce boards with higher end-cracks, where 704 and 239 mm are in their respective central and peripheral boards, whereas the steamed logs at 92°C present a greater relief of growth stresses, as observed by the smaller difference between the cracks' length in the central (394 mm) and peripheral (165 mm) boards.…”