Raspberry Pi 4 2U rack-mount for 12 Raspberry or for 8 (with Samsung T5)

Important note:
this version is deprecated
Mark III here https://www.thingiverse.com/thing:4756812
and here: https://uplab.pro/2020/12/raspberry-pi-server-mark-iii/
Mark II is here https://www.thingiverse.com/thing:4625811
and here: https://uplab.pro/2020/09/raspberry-pi-rack-server-mark-ii/

I was inspired by the projects of the guys, but drew everything from scratch and made the model easier and lighter. Added coolers and latch at trays.
I also made a mount for Samsung T5 drives for the same trays. And you can use this server for 12 Raspberry or for 8 Raspberry and 8 Samsung T5 as I use them.

Part list:

• 8x Raspberry Pi 4 4GB
• 8x Samsung T5 512Gb (or 12 Raspberry and no SSD)
• 8x Raspberry Pi PoE HAT
• 8x 7.5 mm high radiators for Raspberry Pi processor for example
• 8x SanDisk High Endurance Video Monitoring, White 32GB
• PoE switch
• 3x 5M Threaded rods. ~455mm
• 6x 5M nuts
• 44x M2.5*12mm (32 for 8 Raspberry and 12 for Samsung T5)
• 12x M2 nuts (for Samsung T5 holder)
• 1x 12v adapter I used this
• 5x 12v PC 80mm coolers Arctic F8 Value Pack, ACFAN0 0061 A
• 1x 3Pin to 6x 3Pin Molex (6x15cm) I cut the first one in the line and connect it to adapter socket

assembling tips: https://youtu.be/vwQijmpmPXw

You need to print:

• 12x trays
• 12x trays faces
• 1x base short
• 11x base
• 20x Fan fix
• 1x rack mount bracket left (or short version)
• 1x rack mount bracket right (or short version)

in case you would like to use Samsung T5:

• 4x Samsung T5 holder back
• 4x Samsung T5 holder front