Which is the best (and well documented) CoreXY implementation in 3D printer by your opinion?
I have found several CoreXY variants during 2015 (incl. C-Bot, http://openbuilds.org/builds/c-bot.1146/), but I want to know your opinions, if you have some personal experience with nifty and open designs. 
https://vimeo.com/40914530
Very interested in seeing the responses to this one. I want to build a CoreXY that has an almost separate XY stage that you could mount directly to makerslide on the wall or something. You’d buy an XY platform, and a length of makerslide/openbeam, and then mount it vertically in your house.
I made one but its hardly documented. 
I’ve seen this movement style be called CoreXY, H-bot, and C-bot. Are these different variations or just different names for the movement style?
@Adam_Steinmark the C-bot is just the name of a CoreXY style printer - It’s a branding if you will. CoreXY and H-bots share the same motion programming, but the CoreXY setup solves some of the racking issues that an H-configuration has by cross linking the belts on opposing sides.
Right @ThantiK : Carl Feniak made the ‘C-bot’: I’m guessing he called it that since it uses Core-XY geometry, and his first name starts with “C”. But that’s just a guess 
BTW I (and many others at this point) built one as well based on his design: It was a great learning process, and I ended up with a fantastic printer.
Main C-Bot OpenBuilds page Carl Started:
I documented my entire build of the thing step by step, so if you count that as documentation,… there is quite a bit:
http://www.akeric.com/blog/?page_id=3063
My first printer was a corexy. Great for simplicity… But rigidity is key. If belts are not evenly tensioned one axis affects the other (x/y). Then you get what I call squircles. You can check out my first several posts, and my github. My opinion is ground linear guides are the thing to use if you go down the corexy path.
The CoreXY + triple leadscrew printer @Vernon_Barry recently made for Fredini is probably the best “maker-accessible” implementation I’ve seen yet. See pics here: http://thegreatfredini.com/tag/jetguy/
He’s been churning out an insane number of 12" cube prints for a massive art project.
A lot of people have built derivatives of one of Jetguy’s earlier CoreXY designs, the CoreXY Cube: http://www.thingiverse.com/thing:393155 @Daniel_Newman 's remix of that with triple lead screws is way better than the original cantilevered Z-stage: http://www.thingiverse.com/thing:612857
Look over Martin’s video, I still get excited when I see the speed: http://youtu.be/pAvWq0DD8uE
http://openbuilds.org/builds/okmi-3d-printer.1316/ made this a while ago, still performs and yes 4 leadscrews i know…
Hey, i made my own see it at http://www.thingiverse.com/thing:313095 the only thing i would change is to remove the weight of the extruder so it could print faster. Its a 1 cubic print area printer 