Ben Sira 38:28

28 So too is the smith sitting by the anvil, intent upon his handiwork in iron; the breath of the fire melts his flesh, and he wastes away in the heat of the furnace; he inclines his ear to the sound of the hammer, and his eyes are on the pattern of the object. He sets his heart on finishing his handiwork, and he is careful to complete its decoration.

Ben Sira 38:28 In-Context

26 He sets his heart on plowing furrows, and he is careful about fodder for the heifers.
27 So too is every craftsman and master workman who labors by night as well as by day; those who cut the signets of seals, each is diligent in making a great variety; he sets his heart on painting a lifelike image, and he is careful to finish his work.
28 So too is the smith sitting by the anvil, intent upon his handiwork in iron; the breath of the fire melts his flesh, and he wastes away in the heat of the furnace; he inclines his ear to the sound of the hammer, and his eyes are on the pattern of the object. He sets his heart on finishing his handiwork, and he is careful to complete its decoration.
29 So too is the potter sitting at his work and turning the wheel with his feet; he is always deeply concerned over his work, and all his output is by number.
30 He moulds the clay with his arm and makes it pliable with his feet; he sets his heart to finish the glazing, and he is careful to clean the furnace.
Revised Standard Version of the Bible, copyright 1952 [2nd edition, 1971] by the Division of Christian Education of the National Council of the Churches of Christ in the United States of America. Used by permission. All rights reserved.