So I finally decided to build my own Kossel XL. First I thought of building a standard kit, but when I saw what @Alex_Skoruppa was doing with his #KosselPro I thought it would be more fun to design my own printer. It’s still in it’s early stages. I got all the components and now I’m designing some custom parts. Any thoughts, comments or advice are more then welcome
I assume you’re going to have something on top to stabilize the vertical members? Looks nice so far… 
Cheers and good wishes. Will you have the extruder motor down on the printing head or up on the top of the machine. I am saving for a Delta and wish to know which way has less problems with jamming.
@Eric_Cha Is that necessary than? 
@Alex_Skoruppa I was definitely thinking of a Smoothieware Controller. I have read that some people have issues with Simplify3D generated gcode and Smoothieware. Do you have any experience with this? For the initial phase I’ll start out with a Megatronics board from Reprapworld.com
@Kenneth_Cummings I haven’t decided yet but I was thinking of putting it on top to keep the Bowden tube as short as possible.
@Alex_Skoruppa That’s exactly what I read about. It also happens with Octoprint on a Raspberry Pi which I love to use. It seems that Simplify3D often creates very complicated code with sometimes very small steps and even duplicate coördinates which could explain your strange extruder behavior. Why it only is a problem with smoothieware over USB and doesn’t affect arduino based boards is another question. There seems to be an online app that removes all the duplicate code lines. If you would like to read up on it, here’s a link with more information https://groups.google.com/forum/#!topic/smoothieware-support/Gz2VbP7muoY
Nicely done! I think the bottom vertices could be a bit higher. That way the whole structure will be more stable.
I recommend putting the extruder at the midpoint of the height, just outside the work envelope.
This prevents the Bowden tube from “curling”, and makes it easier to push the filament.
If you haven’t seen it already, the Altair delta is worth looking at for some ideas.
They use carbon hexagonal tubing for the arms, and “sleeves” for the linear motion. Looks really clean and they’re very rigid.