如果在家,也可以用電鑽drill bit把孔鑽圓了。
所有跟帖:
• 圓倒不一定要,因為膠條的橫截麵會變形,重要的是孔壁得光滑,膠條縱向的變形不會太大 -MoonRiverMe- ♂ (29 bytes) () 09/03/2019 postreply 21:11:10
• 圓倒不一定要,因為膠條的橫截麵會變形,重要的是孔壁得光滑,膠條縱向的變形不會太大 -MoonRiverMe- ♂ (29 bytes) () 09/03/2019 postreply 21:11:10
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