What is a spotface? A spotface is a machined section of a part that allows a fastener to sit flat. This is usually a bolt head or washer but can be other fasteners. A spotface is generally very shallow and removes just enough material to create the clean, even, flat surface.Feb 19, 2021
What are the main types of counterbore?
These configurations include aircraft counterbores, cap screw counterbores, fillister head screw counterbores, blade counterbores, and back counterbores.
What is a shallow counterbore?
Whereas a counterbore is a flat-bottomed enlargement of a smaller coaxial hole, a countersink is a conical enlargement of such. A spotface often takes the form of a very shallow counterbore.
What is the depth of a spotface?
Spotface – The cutting of a shallow counterbore, usually about . 0625 deep (depth symbol is omitted). A spotface provides an accurate bearing surface for the underside of a bolt head.
What is a spot face cutter?
A spotface or spot face is a machined feature in which a certain region of the workpiece (a spot) is faced, providing a smooth, flat, accurately located surface. ... Zero-angle cutters obviate this, functioning similarly to the traditional counterbore cutters of manual machining but needing no pilot.
How do you use a spot face cutter?
https://www.youtube.com/watch?v=kHkETBp-DXE
What is spot facing used for?
Spot Facing Screw Holes A spotface generally takes the form of a very shallow counterbore and is used in order to provide a smooth, flat, accurately located surface.Jul 15, 2019