車個 貝殼 車個 球 螺紋柱 車床 教學

http://robbiethewoodturner.net/category/sauracker-shell/
turning Demonstration Sauracker Shell
http://www.rhino3.de/_develop/__v3_plugins/math/library.shtml
車個貝殼




車個球


螺紋柱
https://www.youtube.com/results?search_query=Poinsot+++spirals+wood
https://www.youtube.com/results?q=wood%20spirals&client=safari&rls=en&biw=1199&bih=812&dpr=1&um=1&ie=UTF-8&gl=TW&sa=N&tab=w1