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Quick release for t-slot aluminum profile t slot aluminum rail Aluminum t-slot extrusions were already popular long before artificial intelligence and industrial automation tome of madness free slot Buy online from AluFab - 1 x 1 T-Slotted Aluminum Structural Framing System Extrusion Bar $ per inch

tome of madness demo slot You could use a piece of steel flat stock, maybe 16ga, with holes that match the pattern of your rails and sandwich that between your rails and your extrusion