工件上的凸台平面加工，多在钻床上用端面锪钻来锪平。有时，由于凸台所处位置的限制；或因为工件的体积、重量过大，移动不便时，可使用手工锪钻将凸台面锪平。手工锪钻，可自已动手制作。图示为手工饱钻的结构简图。刀杆1右端的直径应根据工件上孔的大小而定。其配合精度采用 Boss on the workpiece plane processing, and more in the drilling surface drilled to 锪 level. Occasionally, due to the location of the boss is limited; or because of the size of the workpiece, the weight is too large, inconvenient to move, you can use hand-drill to flat the boss table. Handmade stone drill, you can create their own hands. Diagram shows the structure diagram of hand-cranked. The diameter of the right end of the arbor 1 should be based on the size of the hole in the workpiece. With the use of precision