Supplier briefing · Request for quotation and DFM

Brainwave v3 Enclosure

One aluminium enclosure in three anodised colours for an on-prem AI desktop server. Drawing set rev C.

Brainwave v3 Silver, Copper, Gold
Al 6061-T6 on all tiers. Silver, Copper, Gold are anodise colours only. Brainwave · BangkokRev C · 2026-11-03
02 · Product overview

Three tiers, one enclosure

Brainwave is an on-prem AI desktop server designed in Bangkok. All three tiers share the same exterior parts and the same base material. Only the anodise colour and a few interior brackets change.

TierComputeExterior finishBoard platePSUHeat (est.)Mass (est.)
  SilverNVIDIA RTX Spark N1X (Grace), 128 GBSilver (clear anodise)BW3-210 mini-ITXSF750192 W10.2 kg
  CopperRyzen 7 9700X + RTX PRO 4000 BlackwellCopper colour anodiseBW3-211 deep mini-ITXSF750307 W12.2 kg
  GoldRyzen 9 9950X (120 W cap) + RTX PRO 6000 Max-Q 300 WGold colour (champagne) anodiseBW3-211 deep mini-ITXSF1000576 W12.8 kg

Mass includes components. Enclosure parts only: Silver 7.7 kg, Copper 7.8 kg, Gold 7.8 kg (sheet 3). Source: drawing sheet 23 tier matrix.

Brainwave on desk

Quantity and budget

To be confirmed

Order quantity and target budget are not decided yet. Please quote by quantity tier, for example:

  • Prototype (first article, per colour)
  • Small batch
  • Larger batch at the quantity break you recommend

Scope of this request

Made parts in the BOM (sheet 3, 40 lines): shell sleeve, top cap and twist latch, plinth and base, interior sheet-metal frame, finishing, PEM install. Please state which standard hardware you can also source.

Brainwave v3 enclosure · Supplier briefing · Rev C
03 · Overall dimensions

196 × 341 × 400 mm envelope

W × D × H
196 × 341 × 400mm

Over fin tips and smooth bands

  • Core between fins185.6 × 330.6 mm, corners R12.8
  • Height zones (z from desk)Plinth 0..15 · lower body 15..125 · rib band 125..336 · top cap 336..400
  • Fins21 fins, 4.8 thick, pitch 10.0, depth 5.2, z 128..338
  • Topd124 grip bowl with twist latch
  • Mass incl. components (est.)Silver 10.2 · Copper 12.2 · Gold 12.8 kg

Units mm, 3rd angle projection, general tolerance ISO 2768-mK.

General assembly
Sheet 2, general assembly: front, right, rear, top. Click to enlarge.
Brainwave v3 enclosure · Supplier briefing · Rev C
04 · Parts list

40 BOM lines, one shell for all tiers

P/NPartSize / thickness (mm)MaterialQtyTierg
Exterior and sleeve
BW3-100Shell sleeve (101 + 102 + 103 bonded)assemblyAl 6061-T61S/C/G-
BW3-101Lower body, smooth band, rear I/O196 × 341, z15..125, wall 3.0Al 6061-T61S/C/G994
BW3-102Rib band, 21 fins, 80 hidden slits196 × 341, z125..336, core 3.0Al 6061-T61S/C/G2594
BW3-103Top cap with carry grip196 × 341, z336..400, d124Al 6061-T61S/C/G1214
BW3-104Logo window, PC half-discR43.85 × 3.5PC Lexan 90341S/C/G13
BW3-105Plinth, perforated slanted tray166 × 311, t1.0Al 6061 T4>T61S/C/G173
BW3-106Base platet3.0Al 6061-T6 plate1S/C/G394
BW3-107Foot ringsheet 14Al 6061-T61S/C/G11
BW3-108Foot strip, silicone2.0 × 1.5 × 760Silicone 50A1S/C/G2
BW3-110Power button capd11Al 6061-T61S/C/G2
BW3-111Intake filterd140PET mesh 80 µm1S/C/G6
BW3-112Sleeve base sealEPDM sponge 1.2EPDM1S/C/G-
BW3-115Vent liner, side, perforated302 × 199 × 0.3SS3042S/C/G18
BW3-116Vent liner, front, solid154 × 199 × 0.3SS3041S/C/G9
BW3-117Vent liner, rear, perforated154 × 199 × 0.3SS3041S/C/G9
BW3-118Sleeve lead-in guide4.4 × 24 × 22POM-C4S/C/G3
BW3-119Sleeve dowel ISO 87344 × 12Steel, hardened4S/C/G1
P/NPartSize / thickness (mm)MaterialQtyTierg
Top cap twist latch
BW3-301Latch knob spiderd96Al 6061-T61S/C/G31
BW3-302Half-moon flip tabR43.85 × 3.5PA66-GF301S/C/G14
BW3-303Latch shaftd8 × 25, head d1217-4PH H10251S/C/G11
BW3-304Bayonet cross pinISO 8734 4 × 20Steel, hardened1S/C/G2
BW3-305Latch receiver plate90.5 × 50 × 5Al 6061-T61S/C/G59
BW3-306Cam ring, 2 rampsOD36 × 617-4PH H9001S/C/G42
BW3-307Knob retainer, 2 armst2.2POM-C1S/C/G3
BW3-308Antenna carriersheet 11POM-C2S/C/G2
Interior frame (sheet metal)
BW3-201Base trayt2.06061 T4>T61S/C/G232
BW3-202Sea wall, frontt3.0, flat 381.8 × 177.66061 T4>T61S/C/G505
BW3-203Sea wall, reart3.0, flat 381.8 × 177.66061 T4>T61S/C/G506
BW3-204Frame top rail12 × 14 × 180 bar6061-T62S/C/G78
BW3-206Rail saddlet3.0, flat 33.3 × 906061 T4>T62S/C/G23
BW3-207Hot deck, 3 piecest1.5, flat6061 T4>T61S/C/G191
BW3-210Board plate, mini-ITXt3.0, flat 238.8 × 1726061 T4>T61S332
BW3-211Board plate, deep mini-ITXt3.0, flat 238.8 × 1726061 T4>T61C/G332
BW3-240GPU top brackett2.0, flat 66.6 × 1206061 T4>T61C/G27
BW3-241CGPU tail rest, Coppert2.0, flat 65.4 × 121.26061 T4>T61C43
BW3-241GGPU tail rest, Goldt2.0, flat 82.8 × 121.26061 T4>T61G54
BW3-250SFX-L PSU hangert2.0, flat 97.1 × 1256061 T4>T61S/C/G41
BW3-251PSU foam blockPU 30 kg/m³PU foam1S/C/G4
BW3-270Cable channelt1.0, flat 33.6 × 316.66061 T4>T61S/C/G29
BW3-280Rear I/O brackett1.5, flat 43.4 × 406061 T4>T61S/C/G6

Source: sheet 3 BOM, sheets 5 to 21 for sizes. g = estimated mass per BOM line from sheet 3. Hardware (screws, PEM, dowels) on sheet 4. S/C/G = Silver / Copper / Gold.

Brainwave v3 enclosure · Supplier briefing · Rev C
05 · Material and process

Aluminium 6061-T6, machined shell, formed frame

Material

Al 6061-T6

All tiers, shell and interior. Interior sheet is formed in T4 and aged to T6. No copper, gold or other precious metal is used anywhere.

front 3/4

Wall thickness (mm)

BW3-101lower body wall3.0 ±0.1, R15 inner corner
BW3-102core wall / fins3.0 / 4.8 ±0.05
BW3-103knob pocket floor web3.0
BW3-106base plate3.0
202 / 203 / 206 / 210 / 211sea walls, saddle, board plates3.0
201 / 240 / 241 / 250tray, GPU, PSU brackets2.0
207 / 280hot deck, I/O bracket1.5
105 / 270plinth, cable channel1.0
115 / 116 / 117vent liners (SS304)0.3

Edges break 0.2 to 0.4 unless stated. Surface Ra 1.6 unless stated.

Proposed process (open to your proposal)

  • Shell 101 / 102 / 103
    CNC from 6061-T6 billet or plate, 3-axis plus 4th axis for side operations. Slits cut with a d4 end mill from outside at the groove floor.
  • Sleeve BW3-100
    101, 102, 103 bonded with 3M DP490 plus dowels at the seams. One-piece machining is an open option: your advice please.
  • Interior sheet metal
    Laser cut, bend in T4, age to T6 (AMS 2770), K 0.45, inside R = t. Chem film, then PEM install.
  • Plinth BW3-105
    Perforated 1.0 sheet, bent, corners fibre-laser welded and ground flush, black anodise.
  • Latch and small parts
    17-4PH turned parts (H900 / H1025), PA66-GF30 tab with MT-11010 texture, POM-C, photo-etched SS304 liners with black e-coat.
Brainwave v3 enclosure · Supplier briefing · Rev C
06 · Anodise finish

Silver, Copper, Gold: colour only

Silver
Silver
Clear anodise
Copper
Copper
Dyed copper colour
Gold
Gold
Dyed champagne gold

Anodise specification (sheet 24)

  • ProcessMIL-A-8625 Type II Class 2 (dyed), sulphuric acid
  • Pre-treatBead-blast #120 glass, uniform matte, etch-free deox (no caustic etch)
  • Thickness and seal10 to 18 µm, hot-sealed nickel acetate, seal test ASTM B136
  • Colour matchMatch master samples, ΔE ≤ 1.5 CIELAB, D65 10°
  • Batch101, 102, 103 of one unit in the same tank batch, racked in the same orientation
  • MaskingSeam spigots (EMI path), M4 threads, ground lug pad, PEM bores
  • Black parts and interior105 plinth, 106 base plate: Type II black. Interior sheet: chem film MIL-DTL-5541 Type II Class 3, clear.
  • Cosmetic classesA exterior visible, B rear and plinth, C interior. Rack marks on class C only. Inspect at 1000 lux, 450 mm.
Brainwave v3 enclosure · Supplier briefing · Rev C
07 · Rib band BW3-102

Exhaust hidden in the groove bottoms

vents close-up
Rib band drawing
Render and sheet 7 (click to enlarge)
  • Fins21 fins, 4.8 ±0.05 thick, pitch 10.0 ±0.05 non-accumulating, groove depth 5.2. Fin rings tie to the core at the 4 corner radii only.
  • Hidden slits80 slits, 4.0 +0.1/0 wide, ends R2, through the 3.0 core wall at the groove floor, one per groove on all 4 faces, so every groove reads the same dark.
  • Slit tableSides: 40 × 300 long · rear: 20 × 152 · front: 20 × 152, blind (solid liner). Total cut 723.2 cm².
  • Open exhaustSide rows 12..19 and rear rows 14..19 open: 228.5 cm² cut, 163.8 cm² free behind the liner (71.7 %).
  • Liners 115 / 116 / 117SS304 0.3, photo-etched hex d2.0 on 2.4 pitch, matte black e-coat, bonded with 3M VHB 9469 on solid lands. Dust and EMI screen; lifts off with the sleeve.
  • SeamsTongue 1.5 at both ends into rebates in 101 / 103, spigot fit H8/f7, exterior step max 0.05, gap 0.10 +0.05/0.
Brainwave v3 enclosure · Supplier briefing · Rev C
08 · Top cap BW3-103 and twist latch

Flip, turn 90°, lift the whole shell

grip close-up
Latch section
Logo disc and grip render · sheet 10 section A-A
Shell lifted off
  1. Flip up the white half-moon tab BW3-302 (PA66-GF30). It becomes the handle.
  2. Turn 90° CCW. The cross pin leaves the cam notches (2 ramps 1.5 / 90°, 17-4PH H900).
  3. Lift: the whole sleeve 101 + 102 + 103 (about 3.3 kg) comes off. Frame, electronics, I/O and base stay on the desk.
  4. Interlock: Omron D2F-01F in series with PS_ON opens on the first 0.5 mm of lift. No sleeve, no power.
  • Lift load path, 258 N design loadTab > pins > spider > shaft > cross pin > cam > receiver > 4x M4 > rails > 4x M5 > saddles > sea walls > tray. Load goes into the frame, not the shell.
  • Logo discPC Lexan 9034 RF-transparent window R43.85 × 3.5, back-painted, on spider d96 (Al 6061-T6, tier anodise). Front wordmark etched 0.1 deep after anodise.
  • Latch materials17-4PH shaft and cam, PA66-GF30 tab, POM-C retainer and guides, wave spring 40 N preload.
Brainwave v3 enclosure · Supplier briefing · Rev C
09 · Rear and base

IEC inlet, power button, slanted grille plinth

rear
rear I/O drawing
Rear render · sheet 6 rear I/O 1:1

Rear cut-outs in BW3-101 (sheet 6)

FeatureXZSize (mm), tol +0.1/0
IEC inlet034C6 (Silver) · C14 27.8 × 20.0 (Copper / Gold)
Power button-4734d11.6 +0.1/0, cap d11
USB-C 147309.2 × 3.6
USB-C 247399.2 × 3.6
RJ45703616.3 × 14.0

Connectors mount on frame bracket BW3-280; sleeve cut-outs clear them by +0.5 all round. Front is sealed, no openings.

  • Plinth BW3-105Al 6061 1.0, perforated d2.0 on 3.0 hex (40.3 % open), walls slanted 27.55°, flange 166 × 311 with 8x M3, laser-welded corners, black anodise.
  • AirflowIntake from the bottom: plinth perforation > filter BW3-111 (PET 80 µm) > d132 base opening. Exhaust: upper sides and rear slits.
Brainwave v3 enclosure · Supplier briefing · Rev C
10 · Interior frame

Sheet-metal frame, mount points, tolerances

Interior assembly
Sheet 22 interior assembly (Gold). Frame part sheets 16 to 21 in the appendix.

Frame parts

  • Base plate 106 (3.0) and tray 201 (2.0)
  • Sea walls 202 / 203 (3.0), with hot deck 207 form the CPU duct
  • Saddles 206 + top rails 204 carry the latch receiver
  • Board plates 210 (S) / 211 (C, G)
  • GPU bracket 240, tail rests 241C / 241G
  • PSU hanger 250 (SF750 / SF1000 Gold), cable channel 270, I/O bracket 280

Mount points

  • 2x Noctua NF-A14x25 G2 on 4x NA-AV2 each, holes d4.5 on 124.5 ±0.2 square (tray and hot deck)
  • Board: PEM SO-632-8 standoffs, TP 0.2 to ITX spec, 0.6 Nm
  • CPU cooler Noctua NH-U12A (Copper, Gold)
  • SFX-L PSU: 4x #6-32 into 250, foam 251
  • PEM: 27x S-M4-2, 4x S-M3-1, 4x CLS-M5-1, installed after chem film

Key tolerances (sheet 24)

GeneralISO 2768-mK machined, ISO 2768-m sheet, ISO 13920-B weld
DatumsA base face of 101 flatness 0.05 · B rear face ⟂ A 0.05 · C centre plane
Sleeve locate4 dowels d4 m6 in N7, sockets d4.1 H8 × 7, TP 0.05
Sheet bendsAngle ±0.5°, flange ±0.15, flats per DXF; PEM holes +0.08/0
Brainwave v3 enclosure · Supplier briefing · Rev C
10 · Interior: simulation

Thermal and structural check, all tiers pass

Reduced-order models, to be confirmed on the prototype. GPU die temperature was not simulated directly.

TierFan rpmdBACPU Tj at 25 °CCPU Tj at 35 °C
  Silver115022.068.2 °C75.0 °CPass
  Copper77013.351.7 °C61.7 °CPass
  Gold137025.858.4 °C68.4 °CPass

Limits: Tj 95 °C, and 85 °C at 35 °C room. Fan rpm and dBA at the 25 °C design point. Heat load 192 / 307 / 576 W.

Gold thermal section
Gold, airflow and air temperature, mid section
Frame, lift load 258 N
20.8SF
Peak 13.3 MPa, max displacement 0.03 mm
Latch knob spider BW3-301
2.4SF
Peak 114 MPa, max displacement 0.31 mm
FEA frame
FEA spider
Linear static FEA, voxel mesh, load 258 N (2x Gold mass). Click any plot to enlarge.
Brainwave v3 enclosure · Supplier briefing · Rev C
11 · Attached files

Download the full data package

STEP is the master geometry for CNC. Drawings control tolerances, threads, finish and inspection.

Every sheet is also in the appendix of this deck as a high-resolution imageGo to appendix →
Brainwave v3 enclosure · Supplier briefing · Rev C
12 · Questions for the supplier

What we would like in your reply

  1. Process. Your recommended process for the shell (CNC billet vs. extrusion plus machining vs. other) and for the sleeve (bonded 3 parts vs. one-piece).
  2. Prototype price. Price for a prototype set, per colour, including finish.
  3. Price by quantity. Unit price at the quantity breaks you propose (for example small batch and larger batch), plus tooling or fixture cost and MOQ.
  4. Lead time. For first articles and for batch production, including anodise.
  5. DFM feedback. Any feature that drives cost or risk: fins and hidden slits, R12.8 corners, thin 3.0 walls, perforated plinth weld, tolerances.
  6. Anodise. Can you make Silver, Copper and Gold master colour samples and hold ΔE ≤ 1.5 across parts and batches?
  7. Sheet metal. Confirm bend R = t in 6061 formed in T4 then aged, availability of perforated 6061 stock for BW3-105, and PEM sourcing.
  8. Scope. Which bought-in latch parts and hardware (sheet 4) you can source, and which inspection reports you provide.

Please quote

  • Prototype
  • Small batch
  • Larger batch, your recommended break

Quantity and budget are not decided yet.

Open items

The drawing set has 16 open items (sheet 25). Your input on the ones marked mechanical and purchasing is welcome. See the next slide.

Contact: Brainwave, Bangkok.

Brainwave v3 enclosure · Supplier briefing · Rev C
12 · Open items from sheet 25

16 items not fully specified yet

#ItemDescriptionOwner
01IEC inletC6 is 2.5 A; Copper / Gold need C14 (10 A). Final P/N and cut-out TBDelectrical
02Exhaust area163.8 cm² free behind liner; CFD OK (Gold Tj 58 °C); confirm with prototype smoke testthermal
03Detent codeMISUMI C-BPK3 and Smalley CM12-M5 wave spring codes to confirmpurchasing
04Hard stopLatch end stop and ramp profile not modelled in 3D; define on cam BW3-306mechanical
05TabHeld flat by gravity + detent only; consider a small magnet or springdesign
06BW3-211Deep mini-ITX hole pattern is placeholder until board P/N is fixedmechanical
07ConnectorsSwitch, USB-C, RJ45 keystone, IEC P/N TBD; cables unplugged before liftpurchasing
08GPUGPU bracket screw positions TBD with sample cardmechanical
09CLS-M5Hole size for PEM CLS-M5 to verify vs bulletinmechanical
10SilverNo fin duct: air may bypass the fin stack; add duct if prototype shows itthermal
11BW3-207Hot deck is 3 pieces; fixing tabs / screws not yet modelledmechanical
12Sleeve bondDP490 + dowels at seams vs one-piece machining; band stiffness of thin 101 wall to checkmechanical
13RiserPCIe x16 riser cable P/N and routing openpurchasing
14Silver boardN1X board mechanical data pending; BW3-210 uses mini-ITXmechanical
15AntennasDeep spokes 0/180 pass close to the antennas; RF test neededelectrical
166061 sheetConfirm bend R = t and perforated 6061 stock for BW3-105 with the fabricatorpurchasing

Items 9, 12 and 16 are where your process knowledge helps most.

Brainwave v3 enclosure · Supplier briefing · Rev C
Appendix

Drawing set rev C, all 25 sheets

One sheet per slide. Click a drawing to view it full screen, click again for 100 % zoom, or open the full-resolution PNG.

Brainwave v3 enclosure · Supplier briefing · Rev C
Appendix · Sheet 01 / 25

Index and general notes

Sheet 1
Brainwave v3 enclosure · Supplier briefing · Rev C
Appendix · Sheet 02 / 25

General assembly, exterior, overall dimensions

Sheet 2
Brainwave v3 enclosure · Supplier briefing · Rev C
Appendix · Sheet 03 / 25

Exploded view, BOM, material and finish per part

Sheet 3
Brainwave v3 enclosure · Supplier briefing · Rev C
Appendix · Sheet 04 / 25

Hardware BOM, PEM table, torques

Sheet 4
Brainwave v3 enclosure · Supplier briefing · Rev C
Appendix · Sheet 05 / 25

BW3-101 lower body

Sheet 5
Brainwave v3 enclosure · Supplier briefing · Rev C
Appendix · Sheet 06 / 25

BW3-101 rear I/O detail 1:1

Sheet 6
Brainwave v3 enclosure · Supplier briefing · Rev C
Appendix · Sheet 07 / 25

BW3-102 rib band, hidden groove slits

Sheet 7
Brainwave v3 enclosure · Supplier briefing · Rev C
Appendix · Sheet 08 / 25

BW3-115 / 116 / 117 vent liners

Sheet 8
Brainwave v3 enclosure · Supplier briefing · Rev C
Appendix · Sheet 09 / 25

BW3-103 top cap with carry grip

Sheet 9
Brainwave v3 enclosure · Supplier briefing · Rev C
Appendix · Sheet 10 / 25

Twist latch section A-A, B-B

Sheet 10
Brainwave v3 enclosure · Supplier briefing · Rev C
Appendix · Sheet 11 / 25

Latch parts BW3-301 .. 308

Sheet 11
Brainwave v3 enclosure · Supplier briefing · Rev C
Appendix · Sheet 12 / 25

Sleeve lift-off architecture, interfaces

Sheet 12
Brainwave v3 enclosure · Supplier briefing · Rev C
Appendix · Sheet 13 / 25

Airflow section x = 0 (Gold)

Sheet 13
Brainwave v3 enclosure · Supplier briefing · Rev C
Appendix · Sheet 14 / 25

Small parts 104, 110, 107, 108, 111, 112, 118, 119, 251

Sheet 14
Brainwave v3 enclosure · Supplier briefing · Rev C
Appendix · Sheet 15 / 25

BW3-105 plinth, perforated, with flat

Sheet 15
Brainwave v3 enclosure · Supplier briefing · Rev C
Appendix · Sheet 16 / 25

BW3-106 base plate, BW3-201 tray

Sheet 16
Brainwave v3 enclosure · Supplier briefing · Rev C
Appendix · Sheet 17 / 25

BW3-202 / 203 sea walls with flats

Sheet 17
Brainwave v3 enclosure · Supplier briefing · Rev C
Appendix · Sheet 18 / 25

BW3-206 saddle, BW3-204 rail, BW3-207 hot deck

Sheet 18
Brainwave v3 enclosure · Supplier briefing · Rev C
Appendix · Sheet 19 / 25

BW3-210 / 211 board plates with ITX tables

Sheet 19
Brainwave v3 enclosure · Supplier briefing · Rev C
Appendix · Sheet 20 / 25

BW3-240 GPU bracket, BW3-241 tail rests

Sheet 20
Brainwave v3 enclosure · Supplier briefing · Rev C
Appendix · Sheet 21 / 25

BW3-250 PSU hanger, BW3-270 cable channel, BW3-280 I/O bracket

Sheet 21
Brainwave v3 enclosure · Supplier briefing · Rev C
Appendix · Sheet 22 / 25

Interior assembly (Gold), fan mounts, standoffs

Sheet 22
Brainwave v3 enclosure · Supplier briefing · Rev C
Appendix · Sheet 23 / 25

Tier configuration Silver / Copper / Gold

Sheet 23
Brainwave v3 enclosure · Supplier briefing · Rev C
Appendix · Sheet 24 / 25

Tolerances, fits, datums, anodise spec, cosmetic classes

Sheet 24
Brainwave v3 enclosure · Supplier briefing · Rev C
Appendix · Sheet 25 / 25

Open items (16)

Sheet 25
Brainwave v3 enclosure · Supplier briefing · Rev C
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