feedback

A sharp-edged steel sleeve attached to the bottom of a drivepipe or casing to act as a cutting edge and protector.



Related Terms

CIRCULAR FORM TOOL

A round or disk-shaped tool with the cutting edge on the periphery.

CLEARANCE ANGLE

The angle between a plane containing the end surface of a cutting tool and a plane passing through the cutting edge in the direction of cutting motion.

CUTTING EDGE

  1. The point or edge of a diamond or other material set in a drill bit. Also known as cutting point. 2. The edge of a lathe tool in contact with the work during a machining operation.

NEGATIVE RAKE

The orientation of a cutting tool whose cutting edge lags the surface of the tooth face.

POINT ANGLE

The angle at the point or edge of a cutting tool.

CASING SHOE

A ring with a cutting edge on the bottom of a well casing.

DRIVEPIPE

A thick-walled casing pipe that is driven through overburden or into a deep drill hole to prevent caving.

DRAFT MARKS

The numbers which are placed on each side of a ship at the bow and stern from the lower edge of the number to the bottom of the keel

CHASE MORTISE

A mortise with a sloping edge from bottom to surface so that a tenon can be inserted when the outside clearance is A thread-cutting tool with many which restrains the blank from spreading during hob sinking.

COLD SAW

  1. Any saw for cutting cold metal, as opposed to a hot saw. 2. A disk made of soft steel or iron which rotates at a speed such that a point on its edge has a tangential velocity of about 15,000 feet per minute (75 meters per second), and which grinds metal by friction.

Related questions

MarineProHelp 2018 - 2020

First time here? Check out the FAQ!

If you've arrived to new location and wonder how to dress comfortably according to weather, check Comfiesto

×