Welding up free T-slot extrusion instead of bolting together a frame?

Why are there no steel version of T slot extrusions? And why don't people use steel RHS or SHS tubes with clamps? Be straight and rigid af

Welding up free T-slot extrusion instead of bolting together a frame? tubing are used As these materials are cold processed they are not T - Slots The sub - committee on the Standardization of T

Why are there no steel version of T slot extrusions? And why don't people use steel RHS or SHS tubes with clamps? Be straight and rigid af

tws slot European standard series, Aluminium alloy 6063-T5, Clear anodised, 8mm slot width, 8 slots - 2 on broad side and 1 one narrow side, Weightmeter

My question is - why use expensive extruded aluminum T-slot? I mean, for a CNC router it makes sense because you need sub-millimeter accuracy,

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Wood and tubing are far weaker compared to t-slot aluminum extrusions or welded steel In precision environments, these materials are just too flimsy to