Custom build CR10 S4

More questions? Don't want to miss any announcements? Do you seek support?
https://discord.gg/NaYhP55p9J
https://www.facebook.com/groups/679001895990790

#####This is not finished project - just started and in progress. Wish to participate? Leave comment. I surely welcome any help ... even with maintaining this page or BOM.

####WHAT

Custom build CR10 S4 printer from sourced and engineered parts. Build volume 400x400x500. As much printable as it can be.

I want to say something about my design choices and where I want my project steer. I am a fan of Openbuilds V slot system and while there are available cheap linear rails I believe that in longer-term and maintenance wise V slot wheels are a good choice. The printer will have dual Z dual stepper setup, SKR board, BlTouch, BMG direct drive with volcano hotend, and Z anti-backlash Delrin nuts. Aim is a machine for big prints with 0.6 or 0.8 mm nozzle.

####WHY

Simple: I wanted a bigger printer and tests some ideas without big investment and didn't want to end up with a bunch of parts left after the upgrading process. So I decided to build one from sourced and printed parts.
I want to use my knowledge to give it my touch without cutting corners ( so obvious in cheap printers)
#####I would like to get your ideas, what components use or how to design a particular part, and don't hesitate to ask questions.

###HOW
#####Stay tuned updates are coming
#####Parts that are printed with red are only drafts ( two walls, 10% infill) only as proof of concept and could be changed. Grey parts are printed in final quality, 4 walls, and 60/80 % infill. I link all separately published parts.

####List of used printed parts (mine or someone else's)
######Mine

• X-axis 100%
  Z carriages for X-axis https://www.thingiverse.com/thing:4313356
• Y-axis 95%
• Y belt drive 100% https://www.thingiverse.com/thing:4369307
• Bed 0%
• Strenghteen brackets 0%
• Legs 100% https://www.thingiverse.com/thing:4372472

######Other

BOM ( at least try :-)

M5x25 22 (cylindrical with hex hole)
M5 washer 22

Update -2: frame

I bought a frame kit from Aliexpress, https://s.click.aliexpress.com/e/_dYly74L it has predrilled all holes so it was pretty easy to build a frame (do not tighten all too much, you will disassemble it few times in future). But it is only the beginning of the journey.
Parts: Extrusion, M5x25 22pcs,M5 washer 22pcs,

Update -1: X-axis

To build X-axis I used my other project https://www.thingiverse.com/thing:4313356
(BOM to be updated)

3. may 2020 Update 0: Y-axis

Here we are, this is my current task as I want to do different sorts of carriage than stock.
Why? All wheels are assembled with radial bearings and even if they can hold some thrust load in the long term it is neither reliable nor precise solution. So I will redesign Y carriages entirely. Instead of Z this time I will use Openbuilds Mini wheels.
And sorry, I will try to use the material that I have at hand.

12. may 2020 Update 1: Y-axis (carriages)

Carriages are done. And also support frame for bed. I decided to give it come weight reduction treatment so some profiles are not necessary. And after making the bed I will test rigidity and maybe remove some parts further. Also finished Y belt drive - motor mount and belt tensioner. I decided to design it so it wouldn't overhang frame ( base profile) unlike others. For testing purposes, I use old Ender 3 board and video proves it is moving :-D
parts used: 3 packages of 10 mini wheels (http://s.click.aliexpress.com/e/_dSqttV7)

22 may 2020 Update2

Make feet with slot for paneling, and now waiting for delivery

• pair of TR8 Z leadscrew http://s.click.aliexpress.com/e/_dTQClyh
• SKR 1.4 + TFT 3.5 + TMC2209 drivers https://s.click.aliexpress.com/e/_d7cYcgd
• pack of four stepper motors (I will not use all but price was ok and I will use one on my ender) http://s.click.aliexpress.com/e/_dVTMfOz
• pack of wheels (this time pack of 10, standard size, solid) http://s.click.aliexpress.com/e/_dSqttV7
• 10m of stepper motor cable http://s.click.aliexpress.com/e/_d6dJsq1
• pack of M4 drop-in T-slot nuts http://s.click.aliexpress.com/e/_dS9faNB

31 may 2020 bed update

Further weight reduction and finished printable crossbar (surprisingly stiff ) so more AL profiles removed ( you can still use them if you wish)

16 jun 2020 new board alive

https://youtu.be/0FaINtfThDE

#####Total cost per project as of today 246€

https://www.youtube.com/watch?v=YGN5xJmQ-tg