Lenovo Tiny Rack Mount 19"

Lenovo ThinkCentre Tiny PC Rack Mount – 8-Bay Sled System

A 19" rack-mount tray for Lenovo ThinkCentre Tiny/M75q-class mini PCs, holding up to 8 units side by side on individual removable sleds.

Features

• Holds 8x Lenovo ThinkCentre Tiny form-factor PCs (M75q Gen 2 and similarly sized Tiny/SFF models)

• Each PC sits on its own sled. Slide it in, slide it out, no tools needed for swapping a node

• Friction-fit sleds: there's no locking mechanism. The sleds are held in place purely by friction. They stay put during normal use but can be pulled out easily by hand whenever you need to service a node

• Standard 19" rack width, designed to fit common server racks and open-frame rack enclosures

• Great for home-lab clusters, Kubernetes nodes, Proxmox hosts, or any multi-node mini PC setup

Why sleds?
Rather than bolting each PC directly into the rack frame, this design uses a sled/tray system: each unit slides into its own bay and is held by friction alone, with no clips or latches. Need to service one node? Just pull its sled. The rest of the cluster stays untouched.

Hardware needed
To assemble the two housing halves:

• 6x M3 socket head cap screws, 18mm length

• 6x M3 nuts

• 12x M3 washers

For the supports:

• 16x M3 square nuts

• 16x M3 countersunk screws, 12mm length

Print settings

• Printed in PETG

• 4 perimeters

• For the cutouts in the frame and sleds, add support enforcers

• Frame: support pattern set to honeycomb

• Sleds: support pattern also honeycomb, but with a pattern spacing of 2mm instead of the default 2.5mm

• Print sleds and rack frame with attention to tolerances, since sled fit relies entirely on friction. If your printer runs a bit loose or tight, adjust dimensions slightly to get a snug (but not overly tight) fit

Known issues / tips

• I experienced some warping on the frame during my print (see photo below).

• If you run into the same issue, try rotating the frame by 5° on the print bed and adding a 5mm brim (see slicer screenshot below).

• If your printer has a large enough bed, you should print the frame front-side down. This also saves material, since supports for the cutouts are no longer needed.