Thanks @Gambo for these informative messages. I am a beginner and new here. I have this Prusa MK3s that I use every day and as I will be away from my laser for weeks at a time, I think I will need something to occupy want remains of my mind. I plan to study some programs [Fusion360] and learn a couple new ones like Meshmixer.I am liking the Ender 5 . The Pro model incorporates most of the mods that people have been doing to the Ender 5 for a reasonable price so I think that is a no brainer. I would assemble it and try it and see if it needs more modification and then remove the four vertical extrusions for compacting.I started this hobby with a Creality 10 and it was a good printer and then moved to the Prusa which is a great printer. Am I right?