How does a slot weld differ from a plug weld?

Welding symbol Information: V-Groove on arrow side Square plug and slot weld symbol In my article on the different types of welds I showed you the 5 basic welds: fillet, groove, surfacing, plug, and slot There is a specific weld symbol for plug weld vs slot weld Slot and plug welds are made when holes are created in one material and then welded to another by filling the holes with weld metal The difference is that a

plug or slot weld 3 Plug or slot Plug and slot welds are used to connect overlapping parts by drilling holes in one of the parts Weld metal is deposited in