Print 10" 1–4U Draft

PrintableRacks R23D printed 10-inch homelab rack

The easy one. Each side is a single printed loop with the rails built in, joined by a top and a bottom plate with eight M6 screws. Eight printed parts and about 20 minutes to put together with one hex key. Up to 4U per unit; for more height you stack two. It is a first draft that nobody has printed or load-tested yet; a free 4U print kit is in the builder.

Open this frame in the builder

Opens the “PrintableRacks R2 · 4U · Homelab” starter build, which passes every check. Opening it replaces the rack saved in this browser.

PrintableRacks R2 rendered from its CAD: two one-piece printed sides with the rack holes built in, a dark top plate with a fan grille and a dark ribbed base plate. — Rendered from our CAD. Not printed yet.

Key facts

The PrintableRacks R2 is a printable 10-inch rack frame, designed by PrintableRacks; it is a first draft that nobody has printed or load-tested yet.
It comes in 1U to 4U, with 230 mm of usable depth.
The opening between its rails is 222 mm, for panels 254 mm wide.
At 4U it is about 262 mm wide, 230 mm deep and 224 mm tall as drawn in the builder.
It needs a printer bed of at least 256 mm and about 765 g of filament at 4U.
293 of the 359 loose devices in the PrintableRacks catalog fit it on a shelf without sticking out the back.

PrintableRacks R2 specs

Type	Print it yourself (first draft; free 4U print kit in the builder)
Rack standard	10-inch (254 mm panels)
Heights	1U, 2U, 3U, 4U
Usable depth	230 mm
Outer size at 4U	262 x 230 x 224 mm (W x D x H, as drawn in the builder)
Opening between rails	222 mm
Fastening	Eight M6 button-head screws into captive nuts, one 4 mm hex key. Gear bolts into M6 square nuts held in a printed cassette inside each rail
Smallest printer bed	256 mm
Filament	About 765 g at 4U
Load rating	None: not load tested yet

PrintableRacks' own design. Print files exist for 4U and were checked in software and sliced (about 765 g of PETG and 25.6 hours, or 805 g with the rear brace), but nobody has printed one yet. Use PETG or ASA; PLA softens near warm gear.

Strengths and trade-offs

Strengths

Eight printed parts and eight screws; about 20 minutes to assemble with one hex key
Each side is a single printed loop with the rails built in, so there are no posts to square up
No cage nuts and no heat-set inserts: square nuts sit in a cassette behind a solid 3 mm rail wall
Every part lies flat on a 256 mm bed and prints without supports
Top plate has a fan grille for a 120 mm fan

Trade-offs

Not printed or load tested by anyone yet; treat it as a first draft
4U at most per unit on a 256 mm bed; go taller by stacking two units
Fixed 230 mm depth
The wall beside each rail nut is 2 mm thick, so do not over-tighten
Open front and back: add the optional rear brace if it sways

What fits in the PrintableRacks R2?

Counted from the 706-part catalog at the frame’s tallest height (4U) and deepest option (230 mm). Loose devices are checked on the shelf named beside them.

218 rail parts fitof 225 for 10-inch rails
293 loose devices fiton a shelf, of 359 in the catalog
5 stick out the backat 230 mm deep

Fits, for example

Lenovo ThinkCentre Tiny (M720q / M920q)1U on the printed 1U shelf; 47 mm to spare at 230 mm deep.
Raspberry Pi 5 (8 GB)1U on the printed 1U shelf; 174 mm to spare at 230 mm deep.
UniFi Cloud Gateway Ultra1U on the printed 1U shelf; 102.4 mm to spare at 230 mm deep.
Synology DS423+4U on the printed 1U shelf; 7 mm to spare at 230 mm deep.
HP EliteDesk 800 Mini (G4-G6)1U on the printed 1U shelf; 55 mm to spare at 230 mm deep.
Dell OptiPlex Micro (7080 / 7090)1U on the printed 1U shelf; 52 mm to spare at 230 mm deep.

Does not fit cleanly

Synology DS224+Sticks out 2.7 mm4U on the printed 1U shelf; 230 mm deep frame.
Synology DS225+Sticks out 2.7 mm4U on the printed 1U shelf; 230 mm deep frame.
UniFi USW-Enterprise-8-PoESticks out 18 mm2U on the printed 2U shelf; 230 mm deep frame.
Framework DesktopToo shortNeeds 5U; the tallest PrintableRacks R2 is 4U.

Questions about the PrintableRacks R2

Will a 1-litre mini PC fit in the PrintableRacks R2?

Yes. A 1-litre mini PC such as the Lenovo ThinkCentre Tiny (M720q / M920q) (179 x 34.5 x 183 mm) takes 1U on the printed 1U shelf and leaves 47 mm spare at 230 mm deep.

Will a 2-bay NAS fit in the PrintableRacks R2?

Only with an overhang. A 2-bay NAS such as the Synology DS224+ (108 x 165 x 232.7 mm) takes 4U on the printed 1U shelf, but at 232.7 mm deep it sticks out 2.7 mm behind the 230 mm frame.

Can I download and print the PrintableRacks R2?

Yes, at 4U. A free print kit (.3mf, opens in Bambu Studio and other slicers) for the 4U build is in the builder: open the frame, open the Parts list and choose Download print kit; it needs a free account. The kit has a small test piece: print that first. Other heights have no files yet. It is still a first draft, checked in software and sliced, but nobody has printed or load-tested one. The files are free for personal, non-commercial use (CC BY-NC-SA 4.0).

Does the PrintableRacks R2 have a load rating?

No. Nobody has load-tested it yet, so keep heavy gear out until someone has. The builder still adds up the weight of your parts.

Who designed the PrintableRacks R2?

Designed by PrintableRacks. A free print kit (.3mf, opens in Bambu Studio and other slicers) for the 4U build is in the builder: open the frame, open the Parts list and choose Download print kit; it needs a free account. The kit has a small test piece: print that first. Other heights have no files yet. It is still a first draft, checked in software and sliced, but nobody has printed or load-tested one. The files are free for personal, non-commercial use (CC BY-NC-SA 4.0). Open the PrintableRacks R2 in the builder to get it, or see our five frames side by side.

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