- 1 decade agoFavorite Answer
(1) The handcrank/twizzler is a very useful device for those craftsmen who do not have a lathe, turning head or any mechanical means of rotating chair members for tapering with the trapping plane. The standard and lathe trapping planes can only be used on cylindrical pieces of wood which are rotating. With the handcrank/twizzler, it is possible to rotate the wood by hand thus enabling the rounders to be used to make cylindrical lengths and the trapping plane to be used for tapering.
(2) hand-cranked 的意思是指「用手搖」的意思.Source(s): (1) http://www.ashemcrafts.com/products_handcrank.aspx (2) http://tw.knowledge.yahoo.com/question/question?qi...