Hello,
As a side note, I would like to clarify what size extrusion is in the kits. The extrusion size(s) - depending on which kit you use - has 20x20 and 40x20 size extrusions. This is the outside dimension size in millimeters. The weight (size 20x20) is 0.48kg/m (approx. .33lb / ft) and the 4th moment of inertia is 0.72cm4 - for those that want to do the calc's - which I highly recommend you do when comparing systems. The pullout strength for a fastener connected in the t-slots is 500N (112lbs.). More engineering information can be obtained at
www.item-international.com or contact me at
loren@aes-wi.com.
Hope this helps.
Loren
engineering lead
Team 930
www.team930.com