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ADFLS-2D does not provide hole position accuracy
If the hole position accuracy is not stable with a long shank type such as the ADFLS-2D, centering larger than the tool diameter is effective in advance.
The protrusion is long, and the tool is chamfer to prevent it from getting out of control.
When machining a flat surface, centering is larger than the diameter.
If the ADF diameter exceeds φ3, it is about +1 mm.
However, if the ADF diameter is φ3 or less, it is about +0.5 mm.
For centering operations, the leading drill AD-LS-LDS is convenient
(FAQID:814)