What is Slot Milling: Techniques, Tips, and Practices

Hello all I need some help figuring out how to use this slot attached file uses a contour to machine the undercut on this part

Probably the only rule I follow is if a slot can be made with a slotting cutter then use one If you have to use an end mill the slot location

slot pp demo T-Slot Cutters are designed for milling T-slots into materials where a good surface finish is required and it's applicated to T-shaped groove and the groove

slot 96ace Specification confirm to BS 122 PART 1 – 1953 Dimensions in INCHES • Mainly used for machining round headed flat key seats • Also used to work open grooves,