A fletcher is an arrow maker, so the verse lists three trades and then a fourth, and the fourth is the odd one because the worker and the material are the same person. Nobody in the first three is fighting the material: the water gets led, the wood gets bent, slowly and with the grain. Muller's word, "fashion," is a gentle one, and the original verb is closer to "tame," which isn't as flattering and is probably more honest. Today, pick one small bend in yourself, maybe the way you come through the front door at six, and lead it an inch by putting the bag down and saying hello first.
Well-makers lead the water (wherever they like); fletchers bend the arrow; carpenters bend a log of wood; wise people fashion themselves.
The Dhammapada, verse 80 (trans. F. Max Muller)