根據這篇文章寫一篇文章:"從一小塊軟木 (松木,<unk>木或<unk>木) 開始, 在木頭上用鉛筆記出圖中所示的線條. 在球的兩邊有<unk>孔. 轉過這個區塊, 切開這些小塊的結尾. 這樣一來,  條款:
這裡的圈子與邊緣線略有重覆. 你所做的就是從外面往內切割,直到只剩下一塊在中間,如圖所示. {"smallUrl":"/\/www.wikihow.com\/images\/thumb\/5\/55\/Whittle-a-Ball-in-a-Cage-Step-4Bullet1.jpg\/v4-460px-Whittle-a-Ball-in-a-Cage-Step-4Bullet1.jpg","bigUrl":"\/images\/thumb\/5\/5\/Whittle-a-Ball-in-a-Cage-Step-4Bullet1.jpg\/aid\/42434v4-728px-Whittle-a-Ball-in-a-Cage-Step-4Bullet1.jpg","smallthumb"\",6\",Height"\",\n"Height"\n"\n"\n"Height"\n"\n"\n"\n"\n"\n"\n"\n"\n