Bottoming drill | Article about bottoming drill by The Free Dictionary
bottoming drill[′bäd·əm·iŋ ‚dril]
A flat-ended twist drill designed to convert a cone at the bottom of a drilled hole into a cylinder.
References in periodicals archive
Set Includes Taper Drill,Second Drill, Bottoming Drill
Drill with the bottoming drill just enough to get a flat bottom hole.
A bottoming drill, which was considered good practice by Mr.