Had a little problem but not with the printer!
It was a slicing software issue. But had great tech support from Asta. Thanks again.
Fred From Texas appreciates the customer service

Works really good for having no idea what I am doing!

Longer LK4 X is my fourth 3D printer. Amongst my Creality Ender 3, Anycubic Mega i3 and Anycubic Mega Zero, LK4 X is the best so far, and not even the most expensive one.

With magnetic bed, direct dual drive extruder, 3D Touch, silent drivers, Z screw top fixation, X & Y belt easy tensioning system, filament runout sensor, double blower cooling system, optical Z endstop and sensible cable management, there is really not much left to be desired.

The only thing I couldn't help regarding hardware was removing the extruder cover - that big piece of metal was only a dead weight for X axis motor. I also tried to speed up the mesh bed leveling with G-code, but with no significant improvement yet. Regarding firmware, I would really appriciate if Longer published the source codes for further tinkering - given that main board firmware is open-source Marlin, it shouldn't be a problem. Also having access to LCD firmware would be greatly appriciated - I really miss seeing a remaining print time estimate, and I would gladly translate the controls to CZ, SK and PL.

Facile monter et une bonne prise en main

it's been 5 years sinceI baught my printer. It has worked very well. I had gotten some bad PLA that clogged the head one time. But, that's not the printer's fault. still use it today. Just wash the bed plate with hot water and slow it down for the raft to be formed. then I put magnets on the raft to help hold the progect for long biulds. Thin refrigerator magnets work the best. I have tried meny ways of holding the progect down. But hot water and magnets are the best. Thank you for asking.

Troubleshooting isn't always easy when prints fail mid job. It was easy to assemble and start using. I'm using Cura to create STLs which could be part of the problem. I like the size of print (across as well as height). I've had it for 5yrs now and it's still working nicely.

This is my first 3D printer and it has been a great experience. It was easy to set up, mostly easy to balance, very easy to use and works great!

I great 3D printer for the money packed with lots of interesting features and almost ready to go out of the box with not much tuning needed.
https://youtu.be/dFBp6_KoYSY

I love and i want it

adorava ter esta para dar vida aos meus projetos!

gostava de ter a LK5 PRO FDM 3D Printer para poder imprimir bonecos para o meu sobrinho ;)