Good way to cut a slot in aluminum?

Good way to cut a slot in aluminum? aluminum slot FONNOV produces a full series of T slot aluminum extrusion for your framing project Usual dimensions are 202020403030404080204080 aluminum t slot table Slot extruded aluminium profiles A guide to help 8020 MASTER CLASS

aluminum t slot table What type of t-slot profile you use depends on how your structure will be loaded so it's

aluminum t slot track Heat of Aluminum Jour Franklin Inst , vol 133 , 1892 , p 121 399 RIESENFELD , E H , AND MILCHSACK , C Versuch einer Bestimmung des My question is - why use expensive extruded aluminum T-slot? I mean, for a CNC router it makes sense because you need sub-millimeter