鉸刀的切削作用在多方面和鏜刀、蔴花鑽的切削作用相似。普通有一種錯誤觀念,以為鉸刀在孔中是藉其縱向切削齒将孔鉸刮準確。而事實上一個比孔略大的统刀,必須用它的頂齒來開闢它前進的道路。如此,一個圓、直、和正當列線的光潔孔方能得到。同時它的尺寸也和標準鉸刀者極相近。 Reamer cutting in many ways and boring knife, twist drill cutting similar. There is a general misconception that the reamer is in the hole by means of its longitudinal cutting teeth to the hole hinge scraping accurate. In fact, a knife slightly larger than a hole must use its top teeth to open up its way forward. In this way, a round, straight, and proper alignment of the smooth line can get. At the same time its size and standard reamer extremely close.