looking to build new printer, what sliding mechanisms should i use? (11 replies)

i am looking for a 200x200x200 build platform. maybe 300x200x200.
i am trying to decide on a linear motion system. i like the use of spectra line.

1. hwin track system
   A very good system, the bearing units might be a bit heavy compared to others. very expensive.
2. 20x20 v-slot with their carriage system
   at $5 per wheel + spacers can get expensive fast. i have no idea how it performs
3. m8 hardened steel rods with lm8uu's
   lm8uu can be noisy and a bit sloppy. the hardened shafts are expensive.
4. m8 stainless steel rods with brass bushings or lm8uu's
   as above, but the stainless is much cheaper, lm8uu's will make the rods after a while of use.
5. m8 stainless steel rods with plastic bushings(hpde or other sliding materials)
6. 20x20 v-slot with bushings(hpde or other sliding materials)
7. 20x20 t-slot with bushings(hpde or other sliding materials)
8. 20x20 box with bushings(hpde or other sliding materials)

i have no idea how well the bushings work. they seem like a good idea. i haven't seen enough on them.
i am trying to figure which system would work best for the xy gantry.

i am planning to use the e3d chimera(dual nozzles) with bowden extruders. maybe have a nema 14 extruder for flex filaments. i want to have a enclosed build chamber with heating.
i am also looking for other designs i could use.

i have read through after hbot go xy and i like his designs but i want to try using spectra line first