What is your opinion of the robo 3d ?
I backed their Kickstarter campaign for the PLA only model.
I'll preface the following by saying that I've never had any problems with the usability or reliability of the machine.
With that being said, I personally feel that there is a LOT of room for improvement and I dont consider it a turn-key solution.
Most users, myself included, only start to really appreciate the ROBO3D after they have added a bunch of upgrades ( e.g. smart LCD Panel, extruder, hot-end, Lights,enclosure,etc.) The chasis is almost comically large, and i find it a bit noisy compared to the other machines.
If you're willing to put some time and money into it, you will end up with a reliable machine with good quality and a huge build volume.
Additionally, the Robo3D community is very helpful when it comes to troubleshooting and upgrades.
Do I like the machine? yes.
Do I think other machines (e.g. wanhao & flashforge) offer more value? yes.
I should also mention that I find the flashforge EXCEPTIONALLY easy to work on. I actually purchased mine on ebay as a "broken/ for parts" unit.
I stripped it down, cleaned it, and replaced the extruder. It's like a brand new machine