Slot Machines


A slit or other narrow opening, used for receiving something, such as a coin or a letter. Also: a position in a group, series, or sequence, or a job or rank; an assignment.

A slot machine is a gambling device that accepts cash or, in “ticket-in, ticket-out” machines, a paper ticket with a barcode. A spinning reel then displays a series of symbols or other images, and the machine pays out credits based on a paytable. Classic symbols include fruit, bells, and stylized lucky sevens. Most slot games have a theme, and the symbols and bonus features are aligned with that theme.

In addition to the high percentage of jackpots, another reason slots appeal to players is their ability to be played very fast. Unlike many forms of gambling, which require lengthy periods of time to learn whether they have won or lost, a player can spin the reels in seconds, and receive feedback almost immediately (Griffiths & Parke, 2005; Haas & Edworthy, 1996). In addition, monetary wins are often accompanied by high-fidelity attention-grabbing music and amusing animations (Dixon et al., 2019).

When cutting a slot, it is generally recommended that the entire slot be cut in at least two passes using axial cuts, so that chip evacuation can be managed easily. This method, called plunging, avoids the problems of interrupted cutting, such as tool deflections and vibration, but is still not ideal for surface finish. For this reason, the use of special tooling like cutters with chip breakers is often recommended.