[Knufire]

Originally Posted by pilleya

There were many COTS manipulator systems available to stack the totes.

Just look at Andymark, they came out with tote stacker kit including all the necessary parts. Extrusion just had to be cut to size and assembled

http://www.andymark.com/product-p/am-3098.htm

Vexpro and Competition Robot Parts also had gussets which allowed linear motion

http://www.vexrobotics.com/vexpro/ve...ar-motion.html

http://www.competitionrobotparts.com...elevator-kits/

All of these were linear motion kids. None included any sort of mechanism that interfaced with the totes; simply parts that would help you build a constrainted linear motion track that wouldn't bind.