So i’ve recently bought my first 3d printer, a ANYCUBIC Kossel Pulley Version. After several hours of building the printer together with my dad, I uploaded the firmware and did a bit of leveling as explained in the small guide-book. I have already had a few successful prints, such as cable holders, the benchy boat, cubes and so on. Everything was fine until i tried to print something bigger. Not bigger in sense of height more like the wideness of things. I quickly found out that it was 1 spot, that wasn’t leveled correctly. Every other spot on the bed seems to be fine, its just that one spot between two motors (As seen on the picture). Now i have already tried alot of different levelings and adjustments on the bed, I also checked that the glass plate is flat for sure. But no matter what I change really, this one SAME spot always seems to be too far away from the nozzle. I’ve read some stuff about the “Arm Length” settings you can adjust in the firmware, but i hope to solve the problem without needing to change those complicated settings… But i would do it of course if you guys can clearly tell me that this is the problem source. I hope somebody can help me with this. Any tips are appreciated.
Cheers, Dave
You should read about delta printers: http://wp.boim.com/?p=54
Generally, they are not great for beginners as they are more difficult to setup than cartersian style. The diagonal rod length is very important to set properly. Anycubics manufacturing is not exactly a precision operating so you should disconnect one of the diagonal rods, measure it to the exact mm and enter that value into your firmware. Beyond that, just follow the guide above.
Thanks mate! I will look into this tonight and ill give you some feedback.
If anyone else got more ideas, just write them down 
Cheers
Zorrar
4
I have the exact same problem and I have been trying to fix it for weeks. Did you find a solution for it? If yes, what did you change to fix it?
Not yet, ive done a pause of it for a while… ill post it if i find a solution
Did you ever get this resolved. I have the same problem only in reverse. The spot in the very front (Between the A and B or X and Y motors) is always 0.4mm different (lower) then all the others, ouch… =0 Scratched the built plate quite a bit the first time I tried to print a larger part… =[
Luckily the build tack that they provide to stick on the glass is nice and tough. It did not do much damage and just looks ugly as it scored a white line (white filament) in that nice black plate.
