I can't speak to multi colour perse, however the creality K2 went on sale today for certain countries and they have a 50% off sale for a limited number of units, they sold out today's stock but will have it again tomorrow then they will drop to 40% then 30%. Might be good if your willing to be a beta tester essentially.
The Prusa units seems to waste less filament.
I cannot comment on the noise of the Kailh browns at the moment as the board has been giving me some grief and I am waiting on new Elite-C controllers from Omega Keys. The keycaps came from ChocFox, the PCBs were ordered directly from JLCPCB using Foostans design, everything else was mainly through amazon. As for the acrylic, I have my own CO2 laser and just cut them out of 1.5mm clear, also from Foostans GitHub repository.
There are several good tutorials out there with parts lists and the build process, Marek Piechut has a good one called Corne MX 3.0 Keyboard Build Guide.
I wanted something super thin so soldered the controller to the board, I do not suggest this as I had some errors on my part and destroyed the controller, thus I'm waiting for two new ones before I can use the board, until then I'm stuck with my hand wired dactyl manuforms.
Just make sure you know what board and keycaps you want, sounds like the Corne chocolate to me, and pay close attention to the LEDs if you go that route, I have 600 that are of no use to me and am waiting on the proper ones.
Other than that have fun and there are plenty of people willing to offer help and advice between here and Discord.
I'm building a low pro Corne, Kailh browns with ChocFox keycaps, it'll be my travel keyboard.
I am using Elite C's.
Almost forgot, Teaching Tech has a great calibration web site and YouTube channel.
My first suggestion if you have a Raspberry Pi Zero 2w or better is to install Klipper. If that isn't a route to go down for you then Myers firmware was really good (not sure if it's still around since I went to Klipper).
I've printed so many miss for mine, spool holder moves to the side, filament guides, different spool holders with bearings, new hot end fan assemblies ,small tool holder that slides into the v slots. Covers for the V slots.
It's a great machine to learn and tinker on, some people don't like that but I really enjoyed it.
I've since switched to direct drive instead of the Bowden tube and added another Z rod and stepper. I have a microswiss all metal hotend which has been fantastic and I have put Noctua fans for the heat break. Also upgrade the Bowden tube to the Capricorn type, it is much better.
A magnetic build plate from Biqu was another good addition.
Almost forgot, I printed risers for the feet out if TPU and that seems to help, I probably would have tried the ones that the squash balls go into but these work fine. In order to print TPU with the Bowden tube you need to print slow.
Also keep an eye on the plastic handle on the filament extruder, they are known to be weak and crack, a good aluminum dual gear is a good low cost investment.
Search on Thingiverse and Printables for mods for the Ender 3 and you will be overwhelmed with your options.
Patience is a virtue, and remember there are no stupid questions and a huge community of people willing to help.
If there is anything else I can do to help, don't hesitate to ask.
That sounds like an interesting plan, my E stepper driver was what acted up on my 4.2.2, it seems to be working now, but I'd like to see your config in case I need to go in that direction.
Update:
I took everyone's advice and tried all the suggestions. In the end I completely disassembled the printer and made sure everything was square or perpendicular where it needed to be. I think maybe the dual z screws were binding, although when I took everything apart I noticed that I did not use the Y cable for both z steppers, I ran the original short cable to one motor and
the Y to another, not sure if that had any effect or not, but now the Y cable is running both z steppers.
It does seem to be better, but I still have the dip in the bed, which is still a bit of an issue for the BL Touch, but not nearly as bad as before. I may have slightly bowed it when trying to crank down the levelling wheels.
I think that the z screws were binding just enough that it couldn't keep up with the micro adjustments, I guess time will tell.
Thanks for everyone's input and advice, hopefully it'll run for a couple more years. If not then a replacement Bamboo might be in order.
Now I just need my resin printers to stop failing prints, but I think that's more me than the printers. lol
Thanks everyone.
It could be that I am cranking down on the wheels too much. Thought that maybe they were loosening off so tried to tighten them. I'll keep that in mind when I reassemble the unit.
Thanks.
I have aluminum wheels in place if the original, they seem to be staying tight, but maybe not.
I did notice that the plastic heater wire retainer is deforming in the middle, so maybe that is contributing, I will put a larger washer on it when I reassemble the unit.
Thanks for the comment.
Well of course they did😔, corporations will exploit every little opportunity, in turn they line up cushy roles for slimy politicians in exchange for not fixing these "loopholes".