What's the most rigid way to join 8020?

80_20 t slot   Dan 80 20 aluminum t slot

8020 Extrusions ; 8020 in x in T-Slotted Profile - Four Open · Part #: 1515-242 $ ; 8020 in x in T-Slotted Profile

8020 PRODUCTST-SLOT ALUMINUM EXTRUSION10101 X 14 OPEN T-SLOTSCLEAR FINISHWEIGHT: LBSINCHLENGTH: 24READ BEFORE BIDDING, MAKING AN  8020 profiles? It was really really easy to get the rails lined up, because all the bolts fit into the T slot they are automatically lined up pretty close

slot mania gioco it PennAir is a distributor of 8020, providing Aluminum Extrusion, T-slot framing, Aluminum Profile systems and resources  T-slot aluminum extrusion alloy for strength, machinability and corrosion resistance Profies and torque specifications