Communication with the seller was simple, shipping was quick.
The tools included with the kit were sufficient to assemble the printer, but ball end hex wrenches make it much easier.
One warning: Most of this was well packaged, neat and orderly in all the nice little boxes.
The extrusions in mine were covered in aluminum chips from being cut, and they were also in a number of the boxes due to moving around during shipping. Months later, I have still not been able to get them all off of the extrusions, as they have gotten embedded in the paint inside the channels and occasionally work their way out.
My other problem was one of the parallel rods has a loose joint, allowing the print head to tilt when auto-leveling.
I did not contact the vendor on this, and switched to mag-ball mounts.
This is still a good value for the money, a cheap and entertaining way to get into 3D printing, just take care to prevent aluminum chips going everywhere when you start building.
Took 3 days to deliver so no complaints there. I spent an easy 2 days doing the assembly. Make sure things fit smoothly and correct if they don't. It's a lot harder to pull apart latter. Printer worked straight up but I then spent some time calibrating. I now just turn it on and print. For the money it's brilliant and the print quality is amazing.
I've been choosing a delta kit between the linear rails, smooth rods or roller-carriages design - but that appears to be the last thing which may affect the print quality. First you should look on push-rod ball-joints play and equality of their length! Kossel is the cheapest solution - roller carriages, but they work quite well and easily upgradable to linear rails.So I concluded that in case of failure my money loss would be minimal with Kossel Mini.
In fact, after 3 days of assembly and software configuration I finally started the first 3D print in my life (end-stop mount): https://youtu.be/AuJ0LaVsB38
My 2-nd test print was more complex, also not bad: https://youtu.be/x0kJCxQ-pBs
1 star off for the problems with Marlin firmware provided on SD-card (not compillable, with some Chinese characters).
So I've searched for another firmware and transferred configuration settings from original (not a big deal for a software engineer professional, but could be an issue for others).
Printer was sent to Germany by UPS parcel. I had to redirect it to a remote pickup station where I picked it up. Correspondence with the sales team was fast and good. The printer was safely packed and everything was in good shape at arrival. I was very pleased with the complete kit. Everything in it was packed in dedicated boxes, packing list, USB with manual, everything thoroughly labeled. Assembly needed three unhurried evenings. The assembly guide is awesomely detailed! Electrical assembly also was very easy, too. Parts fitted easily together and after no time I was able to print my first parts ever (OK, the hotend holder has some slight problems accepting the M3 nuts, but nothing critical). I reflashed the mainboard with a Marlin firmware modified by "LVD" (reprap forum) which made calibration very easy. So, after all, I´m very happy with the kit and printing with it makes a lot of fun! Thank you for your nice kit, I can recommend it.
I am an extruding machine setter so it was not a problem to assemble the 3D Printer. Also, the manual was quite helpful. I loved the aluminium frame which created good quality prints and it was more stable than the previous plastic framed printer that I bought. And lastly, thanks for those 2 cooling fans because I didn’t face that heating problem again. Recommended!