KWS Rack v2 RackMod

RACKCEPTION — 10"-to-19" Hybrid KWS Rack V2 Mod

Ever wanted the compact flexibility of a 10" homelab rack, but you've also got gear that only fits a full 19" rack? Now you can have both. This is a remix of the excellent KWS Rack V2 that bolts on 19" mounting capability — so your 19" rack can swallow 9U's worth of 10" rack equipment.

A rack, in a rack. RACKCEPTION.

What's new in this remix

This build reuses the core KWS Rack V2 frame and adds new parts to bridge the 10"→19" gap:

• Modified top brackets / rack ears — new front-top connectors with a rear lip that lets the frame accept standard 19" rackmount hardware.
• Reinforced bottom half — a single printed half (mirror it for a matching pair) that merges both side-bottom connectors into one flange across the rack and bolts together at the center seam with M6 hardware. It slots over the rack-ear lip for a rigid, rattle-free base.
• 1U PSU shelf (linked below) — a honeycomb-vented 1U 19" faceplate and shelf that mounts and straps a power supply.

Print settings

• Material: PETG or ABS for the structural parts, PLA tends to creep under sustained load.
• Tested on: Bambu Lab P1S (256 × 256 × 256 mm).
• Heads up: the 1U PSU faceplate is ~262 mm wide (full 19" face), and must be printed diagonally. 

Hardware

• M6 bolts/nuts for the rack legs and the center seam on the reinforced bottom half.
• M5x10mm for the rack inserts

Parts & links

Base model (required):

• KWS Rack V2 — Heavy-Duty 10" Homelab Rack: https://makerworld.com/en/models/2139130-kws-rack-v-2-heavy-duty-10-inch-homelab-rack#profileId-2317125 

My add-on parts:

• PSU Shelf (1U 19"): https://makerworld.com/en/models/2893831-1u-psu-strap-10-rack#profileId-3233766 

Other parts used in this build:

• KWS 3U Side Panels with Fan: https://makerworld.com/en/models/2782175-kws-3u-side-panels-with-fan?from=search#profileId-3092316 
• 10" Rack Mount for Lenovo ThinkCentre Tiny (M920q): https://makerworld.com/en/models/1808598-lenovo-thinkcentre-tiny-m920q-10-inch-rack-mount?from=search#profileId-1929135 

Credits

Huge thanks to the original KWS Rack V2 designer — this remix wouldn't exist without that foundation. Go check out and like the original.

Now go put a rack in your rack. RACKCEPTION.