Looking for thoughts on a plastic t-slot extrusion system

Looking for thoughts on a plastic t-slot extrusion system plastic t slot extrusion Plastic printed extrusions with metal T nuts Note the ball I'm a fan of Makerbea, a 10mm t-slot extrusion system It's great plastic slot drain 1000's of Aluminum T-Slot Framing Extrusion Parts Free Design, Satisfaction Guaranteed, 100% Aluminum T-slot Compatibility

plastic slot drain 30 Series – Grey Plastic T-Slot Covers for 30mm extrusions – 78″ long $ Original price was: $ $ Current price is: $

plastic t slot extrusion Custom plastic extrusions from Thermoprene are located in the “Polymer Valley” Thermoprene has the capabilities to meet any plastic extrusion requirement  This is an old release, the new release is located here thing:10261 Aluminum T-slot extrusion is great,