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georgi
"Normal" deltas require additional spending for the linear motion, I guess this is one of the reasons I was looking for alternatives.
The linear motion can be done cheaply with things like V-slot extrusions and wheels. If you follow the Deltabot Google group, there's a recent thread from Johann sharing his printable recirculating ball bearing that rides in a T-slot extrusion. I'm printing a set for testing now.....