Simpler shells and stronger small features
Fragile cage strips, thin locators and casting-joint remnants were removed. Local shell skins and retainers were rebuilt for the 1 mm structural target, while preserving the rigid enclosure dimensions.
Chalk Ember
Golden version 28.1
Our chosen design for the next print, with simpler controls, reinforced internals and the original volume-button positions.
Version 28.1 · CAD R3.4 · P1S / 0.4 mm / PLA
- Width
- 78 mm
- Height
- 150 mm
- Depth
- 24 mm
Rigid enclosure body; overall dimensions in Build details.
21 PLA parts, plus separate flexible parts and optional optical fit pieces. Print the button-fit plate first and test with your actual switches.
Approved AI-generated Chalk Ember appearance reference. Current R3.4 uses one-piece printable polymer play and volume controls. Inspiration shows material intent; the CAD views and part schedule define this print.
A closer look
Three Blender films and the R3.4 print explainer.
Signature
Blender appearance study · September 2026
24 sec · Full product reveal and material details.
The Blender films are appearance studies; grille proportions and finishes differ from this print. The R3.4 CAD defines the build, including its polymer play and volume controls.
Explore in 3D
Open 3D viewerChalk Ember28.1
Loading the 3D model…
Focus the model and use arrow keys to rotate, plus or minus to zoom, and Home to reset. You can also use the view buttons below.
Current 28.1 geometry, in Chalk Ember. Polymer controls, a flexible rim and talk grip, and a separate graphite mesh. Materials and colours are a screen preview.
Build details
Open the details you need.
What changed in R3.4
Fewer pieces around each button
Play and volume caps are integrated with their carriers. The former 0.4 mm switch-seat shims and paired 0.1 mm stop shims are built into their printed parent parts; do not add the old separate shims.
Reinforced guides and keepers
The talk guides use nominal 1.2 mm walls, broader screw ears and revised spacing. Microphone, LED and internal retainers were reinforced, with local wiring and moving-button clearances checked.
A checked set for the printer
All 25 exported print parts are closed, watertight meshes. Five P1S projects were test-sliced with no mesh repairs. The structural screen found no flagged sub-1 mm walls across 225,102 samples; physical print and hardware fit still need review.
Print projects · Bambu P1S
The exact previously delivered R3.4 print ZIP: four main plates with 21 PLA parts, a fifth optional optical-fit plate, and two separate flexible-only STLs. P1S / 0.4 mm nozzle. Confirm your filament and plate, then slice; print the button-fit plate first.
Open each 3MF as a project at 100% scale. Confirm your filament and build plate, then slice and inspect Preview. Flexible parts need their own suitable material and process; the optical PLA proxies test fit only.
01 Button Fit First
R3_4_01_Button_Fit_First_P1S_PLA.3mf
3MF · 170 KB
9 parts · estimated 49 min / 5.52 g. Open as project; confirm actual filament/plate and slice. No G-code included.
File checksum
SHA-256: 832eb1e7b38cf856bf3a58d5e1afbba2068bbc42633d3d0b2d2ef0bffb76015002 Front and Rear Shells
R3_4_02_Front_and_Rear_Shells_P1S_PLA.3mf
3MF · 644 KB
2 parts · estimated 384 min / 72.60 g. Open as project; confirm actual filament/plate and slice. No G-code included.
File checksum
SHA-256: 5eb7b0693069b722452b1ca56e4003dbde938fa9332e9344cf6618feeaaccab703 Internal Retainers
R3_4_03_Internal_Retainers_P1S_PLA.3mf
3MF · 180 KB
9 parts · estimated 48 min / 5.53 g. Open as project; confirm actual filament/plate and slice. No G-code included.
File checksum
SHA-256: ceff8b231bd2efb923ba6882489a5e8c21521d1bafbb4151d96cf03d5c0283c004 Grille Bezel
R3_4_04_Grille_Bezel_P1S_PLA.3mf
3MF · 41 KB
1 part · estimated 12 min / 0.79 g. Open as project; confirm actual filament/plate and slice. No G-code included.
File checksum
SHA-256: 90b18acb9f564ed5d4e2c8d61ed6f6836f3d52d57c771e673eaf596417aea35305 Optional Optical Fit ONLY
R3_4_05_Optional_Optical_Fit_ONLY_P1S_PLA.3mf
3MF · 171 KB
2 parts · estimated 10 min / 0.29 g. Open as project; confirm actual filament/plate and slice. No G-code included.
File checksum
SHA-256: f360bd5473cb5562eaa6179df92214b7bd3052578a88be00b52d20634cc71555Materials, dimensions and physical checks
Dimensions
78 × 150 × 24 mm · Rigid enclosure body. Same rigid shell envelope and control positions as R3.3. Overall CAD reference envelope with rim, controls and revised bezel: 83.35 × 152.70 × 25.74 mm. The bezel projects 1 mm farther forward.
Materials and process
21 rigid PLA fit parts, two flexible-only parts and two optional optical fit proxies. Woven grille, scrim, films, seals, screws and electronics are purchased parts. Play and volume caps are integrated polymer in this revision. Chalk / grey / ember colours in the viewer are illustrative; the handoff separates proposed RPS finish/Pantone targets from actual print materials.
What to build first
Print the nine-piece button-fit plate, then test with the actual switches before committing to the shells. Use this complete R3.4 set together. The digital print checks support a fit prototype; they do not establish a complete working harness or a production/tooling release.
- Buttons and fasteners
- Switch dimensions and travel are still nominal estimates. Check wired terminal envelopes, seating, top/bottom press and spring return with the case closed. Verify actual screw lengths and engagement before tightening.Jacob / Elian
- PCB, battery and harness
- The supplied PCB STEP omits U6; its 24 × 24 × 2.4 mm model is a placeholder. R3.3 connector/terminal studies did not establish a validated closed-case harness. Confirm populated-board heights, actual battery and wired connector fits; local R3.4 clearance checks do not close this gate.Elian
- Optics, acoustics and RF
- PLA optical pieces test fit only. Qualify clear optics, speaker mesh/scrim, microphone seal and the Taoglas FXUB63.07.0150C antenna in the powered assembly. Flexible rim/grip need their own suitable material/process; approve physical finish samples before a cosmetic build.Jacob / Elian / RPS
Individual CAD and print files 58
Editable Fusion, full and individual STEP, print projects and STL files. Use this R3.4 set together and follow each file’s material and process note.
Full reference assembly · F3D
Walkie_One_28_R3_4_FULL_REFERENCE_ASSEMBLY.f3d
F3D · 13.3 MB
Assembly/reference coordinates; not a slicer input. Includes purchased items and preliminary envelopes.
File checksum
SHA-256: 2c5612e4c54e99848faf538302d4e6fdd5e545e00beadd109f1b21d2f27bcdecPrint-parts-only Fusion
Walkie_One_28_R3_4_PRINT_PARTS_ONLY.f3d
F3D · 1.5 MB
Editable 25-part print-only native Fusion file; see part roles before printing.
File checksum
SHA-256: af1ffe2647937bab7a2286f0a804b7e841b43ec5644ba8f0ce690227339aeba0Full reference assembly · STEP
Walkie_One_28_R3_4_REFERENCE_ASSEMBLY_NOT_FOR_SLICER.step
STEP · 30.4 MB
Assembly/reference coordinates; not a slicer input. Includes purchased items and preliminary envelopes.
File checksum
SHA-256: 8225c7b494a1dba6cc91e7251539007268a1fd52d0bb531302c7296d3b7adaa0F01 Flexible Rim
C28_R3_4_F01_Flexible_Rim.step
STEP · 242 KB
One current printed part, assembly coordinates, millimeters. Use the matching STL or 3MF for its prepared print orientation.
File checksum
SHA-256: e170783b5a580cab69b30cdcdbba5905250cda28adbc38fc93edf7bb578ff37bF02 Flexible Talk Grip
C28_R3_4_F02_Flexible_Talk_Grip.step
STEP · 14 KB
One current printed part, assembly coordinates, millimeters. Use the matching STL or 3MF for its prepared print orientation.
File checksum
SHA-256: e7c5d36db3ec86c047258d193b9c0c5a8e336341c823b846ea6f4c9a47614231L01 Lens Fit Proxy
C28_R3_4_L01_Lens_Fit_Proxy.step
STEP · 8 KB
One current printed part, assembly coordinates, millimeters. Use the matching STL or 3MF for its prepared print orientation.
File checksum
SHA-256: bdcf6fceb21244bf947ba7865042cb8b18d85597ca1136ab3ecc5ce34002ed08L02 Light Guide Fit Proxy
C28_R3_4_L02_Light_Guide_Fit_Proxy.step
STEP · 18 KB
One current printed part, assembly coordinates, millimeters. Use the matching STL or 3MF for its prepared print orientation.
File checksum
SHA-256: 5450470f279c4826894ac1d2fc527f64b21b1030aeb544f39b1fcc89997a9fd2M04 Print Grille Bezel
C28_R3_4_M04_Print_Grille_Bezel.step
STEP · 34 KB
One current printed part, assembly coordinates, millimeters. Use the matching STL or 3MF for its prepared print orientation.
File checksum
SHA-256: 75f479f6256870c4b388057e0e43f25bb0b223112fc709773f4a1695aa3d06efP01 Front Shell
C28_R3_4_P01_Front_Shell.step
STEP · 1.0 MB
One current printed part, assembly coordinates, millimeters. Use the matching STL or 3MF for its prepared print orientation.
File checksum
SHA-256: 2626b66da7ec6102b73b36f8e26ac25cf0cc7920236d3ec1ed46f1bf009886bcP02 Rear Shell
C28_R3_4_P02_Rear_Shell.step
STEP · 1.2 MB
One current printed part, assembly coordinates, millimeters. Use the matching STL or 3MF for its prepared print orientation.
File checksum
SHA-256: 7b21bd89fe804bbe66887046beea5e8ca53fc4f6729433441f2c5a85836dc133P03 One Piece Play Button
C28_R3_4_P03_One_Piece_Play_Button.step
STEP · 43 KB
One current printed part, assembly coordinates, millimeters. Use the matching STL or 3MF for its prepared print orientation.
File checksum
SHA-256: ba57ca1978ed0352f65ab98d52f5e2ef54fa4e7a5c9983916c06b8a6b8b71518P04 Front Switch Clamp
C28_R3_4_P04_Front_Switch_Clamp.step
STEP · 121 KB
One current printed part, assembly coordinates, millimeters. Use the matching STL or 3MF for its prepared print orientation.
File checksum
SHA-256: 4ba4d3dc9b36c48fdbf054e89b4ae9dd597512ec93f55a1743b903e79d908d9eP05 Talk Carrier
C28_R3_4_P05_Talk_Carrier.step
STEP · 76 KB
One current printed part, assembly coordinates, millimeters. Use the matching STL or 3MF for its prepared print orientation.
File checksum
SHA-256: b796a3ce3f1153c954300d925ed753327ace54815645be8e339d45777f41fa7aP06 One Piece Volume Up
C28_R3_4_P06_One_Piece_Volume_Up.step
STEP · 99 KB
One current printed part, assembly coordinates, millimeters. Use the matching STL or 3MF for its prepared print orientation.
File checksum
SHA-256: 00701cd0dadc9a5577c1c73dcd02e0e7dba5b9a948d7a7c5ec253e9c02f452a8P07 One Piece Volume Down
C28_R3_4_P07_One_Piece_Volume_Down.step
STEP · 83 KB
One current printed part, assembly coordinates, millimeters. Use the matching STL or 3MF for its prepared print orientation.
File checksum
SHA-256: 7ba969253dac2eec7d94f8ae7ed77ba92609d0199dd7d2d71ab5b60bed41e710P08 Talk Switch Cradle
C28_R3_4_P08_Talk_Switch_Cradle.step
STEP · 30 KB
One current printed part, assembly coordinates, millimeters. Use the matching STL or 3MF for its prepared print orientation.
File checksum
SHA-256: d107eb7ee56958c48f1a90caf75ca75f1c271e9aada3c586b176d70655b0f555P09 Volume Up Switch Cradle
C28_R3_4_P09_Volume_Up_Switch_Cradle.step
STEP · 30 KB
One current printed part, assembly coordinates, millimeters. Use the matching STL or 3MF for its prepared print orientation.
File checksum
SHA-256: 9e99f4a30960e1581572fb020398b0a4c715a6621959cc789c877f987141676cP10 Volume Down Switch Cradle
C28_R3_4_P10_Volume_Down_Switch_Cradle.step
STEP · 30 KB
One current printed part, assembly coordinates, millimeters. Use the matching STL or 3MF for its prepared print orientation.
File checksum
SHA-256: 45f05efd7114277695e1ceac3af10bf8728cfedd0cf6745b5dc7cd7d04288de2P11 Lower Speaker Keeper
C28_R3_4_P11_Lower_Speaker_Keeper.step
STEP · 19 KB
One current printed part, assembly coordinates, millimeters. Use the matching STL or 3MF for its prepared print orientation.
File checksum
SHA-256: 96bb66e0765028c040a8bb71f1e7352343159a986fdba5db8b2dd755f9edf996P12 Upper Speaker Keeper
C28_R3_4_P12_Upper_Speaker_Keeper.step
STEP · 19 KB
One current printed part, assembly coordinates, millimeters. Use the matching STL or 3MF for its prepared print orientation.
File checksum
SHA-256: cb89c2ea674d28d2dd832eab279158033916aab0a47f211f790fe30a9c42bb48P13 Microphone Keeper
C28_R3_4_P13_Microphone_Keeper.step
STEP · 49 KB
One current printed part, assembly coordinates, millimeters. Use the matching STL or 3MF for its prepared print orientation.
File checksum
SHA-256: 5d10e42907aa76cad45cb5f64ac6aa71486e3ccac04bc8ad24b9462412fd0a32P14 LED Keeper
C28_R3_4_P14_LED_Keeper.step
STEP · 46 KB
One current printed part, assembly coordinates, millimeters. Use the matching STL or 3MF for its prepared print orientation.
File checksum
SHA-256: 8a3a54bd493f37d917db5d4284bf0b70ffabf4e36d414d7fda3a2c1cb9525925P15 Lower Antenna Frame
C28_R3_4_P15_Lower_Antenna_Frame.step
STEP · 53 KB
One current printed part, assembly coordinates, millimeters. Use the matching STL or 3MF for its prepared print orientation.
File checksum
SHA-256: 55f1c558aebc0d9b85c3e5018f78c64fe5cb5b1cade10cdf8cc4e2901707d92bP16 Upper Antenna Frame
C28_R3_4_P16_Upper_Antenna_Frame.step
STEP · 37 KB
One current printed part, assembly coordinates, millimeters. Use the matching STL or 3MF for its prepared print orientation.
File checksum
SHA-256: d35146d642a83d3ffe66df2ec285615825c030a825ad346d339a75cfaa22d44cP17 Lower Talk Guide
C28_R3_4_P17_Lower_Talk_Guide.step
STEP · 15 KB
One current printed part, assembly coordinates, millimeters. Use the matching STL or 3MF for its prepared print orientation.
File checksum
SHA-256: 2117c3f18b2a27dba6c19e3e81f98023c9160aa8caa0e5e265168f45156cd916P18 Upper Talk Guide
C28_R3_4_P18_Upper_Talk_Guide.step
STEP · 17 KB
One current printed part, assembly coordinates, millimeters. Use the matching STL or 3MF for its prepared print orientation.
File checksum
SHA-256: 6b095039ac5c574d2af1a61e73142537a443054b7286acdca9be33cd84e844f1P19 Battery Keeper 1
C28_R3_4_P19_Battery_Keeper_1.step
STEP · 41 KB
One current printed part, assembly coordinates, millimeters. Use the matching STL or 3MF for its prepared print orientation.
File checksum
SHA-256: 26e4114dfebc942f64e061c46a962321286e5cf303ddf3f43099f36b57145b5fP20 Battery Keeper 2
C28_R3_4_P20_Battery_Keeper_2.step
STEP · 24 KB
One current printed part, assembly coordinates, millimeters. Use the matching STL or 3MF for its prepared print orientation.
File checksum
SHA-256: 000f304ae97f3efde90c1fff3d993965cc0e8312b101288e29b0410ddabc18a801 Button Fit First
R3_4_01_Button_Fit_First_P1S_PLA.3mf
3MF · 170 KB
9 parts · estimated 49 min / 5.52 g. Open as project; confirm actual filament/plate and slice. No G-code included.
File checksum
SHA-256: 832eb1e7b38cf856bf3a58d5e1afbba2068bbc42633d3d0b2d2ef0bffb76015002 Front and Rear Shells
R3_4_02_Front_and_Rear_Shells_P1S_PLA.3mf
3MF · 644 KB
2 parts · estimated 384 min / 72.60 g. Open as project; confirm actual filament/plate and slice. No G-code included.
File checksum
SHA-256: 5eb7b0693069b722452b1ca56e4003dbde938fa9332e9344cf6618feeaaccab703 Internal Retainers
R3_4_03_Internal_Retainers_P1S_PLA.3mf
3MF · 180 KB
9 parts · estimated 48 min / 5.53 g. Open as project; confirm actual filament/plate and slice. No G-code included.
File checksum
SHA-256: ceff8b231bd2efb923ba6882489a5e8c21521d1bafbb4151d96cf03d5c0283c004 Grille Bezel
R3_4_04_Grille_Bezel_P1S_PLA.3mf
3MF · 41 KB
1 part · estimated 12 min / 0.79 g. Open as project; confirm actual filament/plate and slice. No G-code included.
File checksum
SHA-256: 90b18acb9f564ed5d4e2c8d61ed6f6836f3d52d57c771e673eaf596417aea35305 Optional Optical Fit ONLY
R3_4_05_Optional_Optical_Fit_ONLY_P1S_PLA.3mf
3MF · 171 KB
2 parts · estimated 10 min / 0.29 g. Open as project; confirm actual filament/plate and slice. No G-code included.
File checksum
SHA-256: f360bd5473cb5562eaa6179df92214b7bd3052578a88be00b52d20634cc71555M04 Print Grille Bezel
C28_R3_4_M04_Print_Grille_Bezel.stl
STL · 75 KB
Rigid PLA fit part. Print one, using the 3MF OR the STL, not both. Millimeters, 100% scale.
File checksum
SHA-256: e042179a34ef8fb37d1a8eaeb7a89d6978fd27531daad3e088dcfae03f9da139P01 Front Shell
C28_R3_4_P01_Front_Shell.stl
STL · 1.3 MB
Rigid PLA fit part. Print one, using the 3MF OR the STL, not both. Millimeters, 100% scale.
File checksum
SHA-256: 9cdea6d3273a14ac8dae9fcba6a9740f421e7cfdc9a7b6332e3db34450186ad5P02 Rear Shell
C28_R3_4_P02_Rear_Shell.stl
STL · 1.2 MB
Rigid PLA fit part. Print one, using the 3MF OR the STL, not both. Millimeters, 100% scale.
File checksum
SHA-256: 2bf0a49ae44b05b1977e1d2e43cc1146a2e05fce1a77cf73f3a31fe23595c92aP03 One Piece Play Button
C28_R3_4_P03_One_Piece_Play_Button.stl
STL · 147 KB
Rigid PLA fit part. Print one, using the 3MF OR the STL, not both. Millimeters, 100% scale.
File checksum
SHA-256: 1571f1a815aecb805ba5c51b6b6c1fdcb57494e569ade8d32989d2052138b4d9P04 Front Switch Clamp
C28_R3_4_P04_Front_Switch_Clamp.stl
STL · 153 KB
Rigid PLA fit part. Print one, using the 3MF OR the STL, not both. Millimeters, 100% scale.
File checksum
SHA-256: 9bdde7c78e5789cdeb3aee4d9f8515c7f5300afd6b39d1e6ca7f3dc7559dcd92P05 Talk Carrier
C28_R3_4_P05_Talk_Carrier.stl
STL · 145 KB
Rigid PLA fit part. Print one, using the 3MF OR the STL, not both. Millimeters, 100% scale.
File checksum
SHA-256: 0e00c930d6965b17a0689f6d9e30d180533daa3ed171612fc724163425dbe7d3P06 One Piece Volume Up
C28_R3_4_P06_One_Piece_Volume_Up.stl
STL · 129 KB
Rigid PLA fit part. Print one, using the 3MF OR the STL, not both. Millimeters, 100% scale.
File checksum
SHA-256: 873801bb7b857bde0fca637c249e291590a731e5303bcff350d06cdbb31eff04P07 One Piece Volume Down
C28_R3_4_P07_One_Piece_Volume_Down.stl
STL · 118 KB
Rigid PLA fit part. Print one, using the 3MF OR the STL, not both. Millimeters, 100% scale.
File checksum
SHA-256: b5ebbff0b5af808566efc443e96477794c5a0b2a0fff8e1ffd77df1e11ec79a8P08 Talk Switch Cradle
C28_R3_4_P08_Talk_Switch_Cradle.stl
STL · 10 KB
Rigid PLA fit part. Print one, using the 3MF OR the STL, not both. Millimeters, 100% scale.
File checksum
SHA-256: 160df258d18adb6e1d8577084dbea938e889166ad891f5e46edd89b7ff9d33e3P09 Volume Up Switch Cradle
C28_R3_4_P09_Volume_Up_Switch_Cradle.stl
STL · 4 KB
Rigid PLA fit part. Print one, using the 3MF OR the STL, not both. Millimeters, 100% scale.
File checksum
SHA-256: f55ee6ab54dc1bf882c84bfdac66e463875beb556a4f117d04582a37755d3d9eP10 Volume Down Switch Cradle
C28_R3_4_P10_Volume_Down_Switch_Cradle.stl
STL · 4 KB
Rigid PLA fit part. Print one, using the 3MF OR the STL, not both. Millimeters, 100% scale.
File checksum
SHA-256: f752194004e8f360fed91028bd96c4f8f93edf3a50f992a24bb63bee1f3f9598P11 Lower Speaker Keeper
C28_R3_4_P11_Lower_Speaker_Keeper.stl
STL · 59 KB
Rigid PLA fit part. Print one, using the 3MF OR the STL, not both. Millimeters, 100% scale.
File checksum
SHA-256: 6c6253c0d95f73ae838ac69b23cdd7c4bee4022f548cfe344b69a7361fe59cf5P12 Upper Speaker Keeper
C28_R3_4_P12_Upper_Speaker_Keeper.stl
STL · 59 KB
Rigid PLA fit part. Print one, using the 3MF OR the STL, not both. Millimeters, 100% scale.
File checksum
SHA-256: 59f418553c5dd3ad9688242f3510097712043dd5c4bd38ee43a2b92a24d136e2P13 Microphone Keeper
C28_R3_4_P13_Microphone_Keeper.stl
STL · 109 KB
Rigid PLA fit part. Print one, using the 3MF OR the STL, not both. Millimeters, 100% scale.
File checksum
SHA-256: 570d73467c35439fb41a3bfc29251e0a00cf641e9004de39e866a713c997bf21P14 LED Keeper
C28_R3_4_P14_LED_Keeper.stl
STL · 143 KB
Rigid PLA fit part. Print one, using the 3MF OR the STL, not both. Millimeters, 100% scale.
File checksum
SHA-256: d822bb58fefaf675d76ac1e709b9d686f05275f27b4b4d7a109408fc44a345b1P15 Lower Antenna Frame
C28_R3_4_P15_Lower_Antenna_Frame.stl
STL · 47 KB
Rigid PLA fit part. Print one, using the 3MF OR the STL, not both. Millimeters, 100% scale.
File checksum
SHA-256: 4641b76c219fb403e29a66ee51844818bb1dd03143e47f81c10e3191ec8e8703P16 Upper Antenna Frame
C28_R3_4_P16_Upper_Antenna_Frame.stl
STL · 48 KB
Rigid PLA fit part. Print one, using the 3MF OR the STL, not both. Millimeters, 100% scale.
File checksum
SHA-256: 512b601541e4789f279c76caf0ae8ec490fa023888bdf4727b09fe37362663acP17 Lower Talk Guide
C28_R3_4_P17_Lower_Talk_Guide.stl
STL · 93 KB
Rigid PLA fit part. Print one, using the 3MF OR the STL, not both. Millimeters, 100% scale.
File checksum
SHA-256: 99217801e0f470d17bb9b86928633254aa3c9f5f8f1115064d4642c742f7502cP18 Upper Talk Guide
C28_R3_4_P18_Upper_Talk_Guide.stl
STL · 93 KB
Rigid PLA fit part. Print one, using the 3MF OR the STL, not both. Millimeters, 100% scale.
File checksum
SHA-256: a19a8002f87ed54b02f936306c1b8238b254ad6a24d0c4e2a555e93a4a195381P19 Battery Keeper 1
C28_R3_4_P19_Battery_Keeper_1.stl
STL · 66 KB
Rigid PLA fit part. Print one, using the 3MF OR the STL, not both. Millimeters, 100% scale.
File checksum
SHA-256: 3130cfb28939edb23b2a778530968aa205186430846871435930bb67b35c43e3P20 Battery Keeper 2
C28_R3_4_P20_Battery_Keeper_2.stl
STL · 54 KB
Rigid PLA fit part. Print one, using the 3MF OR the STL, not both. Millimeters, 100% scale.
File checksum
SHA-256: 7c1024d4d1f88f59b32047351da73c13c08165c3035597e91a867d5dcaa62520L01 Lens Fit Proxy
C28_R3_4_L01_Lens_Fit_Proxy.stl
STL · 98 KB
Optional opaque fit proxy; does not validate illumination. Millimeters, 100% scale.
File checksum
SHA-256: da3a776b7aff24c2a38b98b1ff4383b3559949ad49b5584b352cc59ab8971bdaL02 Light Guide Fit Proxy
C28_R3_4_L02_Light_Guide_Fit_Proxy.stl
STL · 546 KB
Optional opaque fit proxy; does not validate illumination. Millimeters, 100% scale.
File checksum
SHA-256: c7facaf079b7b4341d524f7bb109c2ffd5bf9cfc904aef31f7497f43db57a9e5F01 Flexible Rim
C28_R3_4_F01_Flexible_Rim.stl
STL · 848 KB
Flexible material only; excluded from PLA plates. Millimeters, 100% scale.
File checksum
SHA-256: ecc4f4ad79fc75e5bf80f1b3df61f6ceea3e4024ec09cd36c67e9fa37632b1c8F02 Flexible Talk Grip
C28_R3_4_F02_Flexible_Talk_Grip.stl
STL · 21 KB
Flexible material only; excluded from PLA plates. Millimeters, 100% scale.
File checksum
SHA-256: 1b50f3896dc9bb1fc26182336d9c500d392272fa6c195c07d6853391c8e5a62bDocuments, packages and verification 27
The complete package contains the 6-page handoff, matching CAD, print files and supporting records.
- Native Fusion × 2, full STEP and 25 individual STEP parts
- Exact print ZIP, five P1S projects and 25 role-labeled STL parts
- Engineering and printability PDFs, part schedule, assembly and colour notes
- Current 3D preview, six CAD angles, exploded and interior views
- Narrated video, captions, transcript and source verification
Download STL files
Walkie_One_28_1_R3_4_STL_Files.zip
ZIP · 1.6 MB
STLs only: 21 rigid PLA parts, two flexible-material-only parts and two optional optical fit proxies, in separate labeled folders. Millimeters, 100% scale. No printer profiles or G-code.
File checksum
SHA-256: 20bce7f779a88fa38d47d2a31f889e7fffe091dbb98e59fb678b33b52aca2fbcComplete 28.1 · R3.4 handoff
Walkie_One_28_1_R3_4_Complete_Handoff.zip
ZIP · 32.9 MB
Matching native Fusion/STEP, all 25 print parts, five P1S projects, engineering and printability PDFs, assembly/material notes, video and source verification.
File checksum
SHA-256: e3d3c98e8369e40d63b48215d4bda17510e3612797bc2cffe1e10ea29b0c64b428.1 · R3.4 engineering handoff
Walkie_One_28_1_R3_4_Engineering_Handoff.pdf
PDF · 390 KB
File checksum
SHA-256: 3ae87ed6e0a8c2777226c39d4ee85560a59df77ae89f3c23593d04e26cd6975aPrint R3.4 · P1S / 0.4 mm / PLA
Walkie_One_28_R3_4_PRINT_THIS.zip
ZIP · 2.7 MB
Exact previously delivered print ZIP, unchanged. Four rigid PLA plates plus separate optional optics and flexible-only STLs.
File checksum
SHA-256: 4527b243323e0507e8eb48c3c5edef3c4dc7eb0db149be02e73041e08a3aeec9Assembly and Nonprinted Parts
Assembly_and_Nonprinted_Parts.md
MD · 6 KB
File checksum
SHA-256: 6751ecb39dd59621bfc4b035b522a79ac4b41f5666cc1b7e643ebeaa52c5f022First Article Checklist
First_Article_Checklist.md
MD · 2 KB
File checksum
SHA-256: 28384b7b4ea4cf65b2f5ae567b803419e1893010b4c86226e7fe99111ceed5e9Inherited R3 3 Harness Boundary Reference
Inherited_R3_3_Harness_Boundary_Reference.md
MD · 10 KB
File checksum
SHA-256: 77fcb70cc361b5767c1c389d5cceaa5720f64e313ea7015878c99317202dbdedMaterials and Colour Targets
Materials_and_Colour_Targets.md
MD · 4 KB
File checksum
SHA-256: ff418c822d8771e0f5e56b8b0f466b668092627737691dd7a4c8182d7f79f2bcPart Schedule
Part_Schedule.json
JSON · 7 KB
File checksum
SHA-256: ad375b3f337578c9dd1d3221f08bfafa7edc1d9284f1cec3b773d42ab3f85c27Part Schedule
Part_Schedule.md
MD · 3 KB
File checksum
SHA-256: b689885d73d0ad670105e68be401dda7ca47417cefd87462522b5805697f879eRelease and Verification
Release_and_Verification.md
MD · 5 KB
File checksum
SHA-256: 85a302601f4b3764214eaa4b9e918f8db19605d28dae5ce2bdf2fa84fc9fb0ffSTART HERE
START_HERE.md
MD · 2 KB
File checksum
SHA-256: e0ee843d6ff2a76da55adca46d3ae1fedc3981686c1bc4b8059366f8b699f5afWalkie One 28 R3 4 Printability Explained
Walkie_One_28_R3_4_Printability_Explained.pdf
PDF · 1.1 MB
File checksum
SHA-256: 8e85490069963d202fe8c9546539f7206bf907282c14669810852dfc0e1fa6f3documents manifest
documents_manifest.json
JSON · 5 KB
File checksum
SHA-256: 6fe0ed84f9da20046cd6fbcad1b2b2dbf2d5931496f3dbe66f6d4e4f4276d7c8Release start here
START_HERE.md
MD · 3 KB
File checksum
SHA-256: de3178a88afcdecd2d6baed47e462dbe63456266ce5d52b46c1c8f45e07c2ea9Printer instructions
START_HERE.txt
TXT · 3 KB
File checksum
SHA-256: abe6a5bd0917ba4199fcfd7a072faf9003e2d185c95a510c05f23729a402e4ebComplete handoff checksums
FILE_MANIFEST.json
JSON · 28 KB
File checksum
SHA-256: 69d03f69feb7b9af6d73a3f8c1fd24ac571633a28977b4d9f7500d55fde1ac81Walkie One 28 R3 4 Changes Explained
Walkie_One_28_R3_4_Changes_Explained.srt
SRT · 3 KB
File checksum
SHA-256: 57c983a2f1a93530e16618ab8d976989ecfa8e777a3928ae5013c258ca7d1f72Walkie One 28 R3 4 Changes Explained Transcript
Walkie_One_28_R3_4_Changes_Explained_Transcript.md
MD · 2 KB
File checksum
SHA-256: d8b7e9e07099a79b3252a5a21a7204b9969541591e26ffe8afbb7d831eceb0a0Saved native Fusion verification
reopened_native_verification.json
JSON · 3 KB
File checksum
SHA-256: 31450b90ccab58aac5686f272a57dd89cde59c8f164c58b14a498232b06aee93Print-only Fusion verification
reopened_print_only.json
JSON · 3 KB
File checksum
SHA-256: 086fb89073594b912be376fa73c3caefcca63e9760fc124b09fe0ceadfbd5effIndependent part export verification
independent_part_export_verification.json
JSON · 6 KB
File checksum
SHA-256: a041312bb1632d026e7fabc7fd9536d5e70f421ff8e1f9d4666668c9c58f3ae220 sampled button positions
native_motion_samples.json
JSON · 2 KB
File checksum
SHA-256: 9d42167c55be2b062a3e4726206ec8d2b05adfcda0c064fbf4b3c7273b3293bcFive P1S project slice checks
final_verification.json
JSON · 3 KB
File checksum
SHA-256: ba2c6dc69b4d701f20366fecfb3720edf0d7fe7ce977c1000f404d5ce44042eaPrint orientation and dimensions
Print_Orientation_And_Dimensions.json
JSON · 14 KB
File checksum
SHA-256: 2b23185f401fc402d7f5c96a1d18d2f351147c0cd3fcf6fe210be070ef61d39bR3.4 web 3D preview
model.glb
GLB · 622 KB
Display mesh only; use STEP for engineering.
File checksum
SHA-256: dac9963c9f95c4234e7a39fba11ada862a99433d4012f1417704f1a419c67d0a3D source provenance
model.json
JSON · 55 KB
File checksum
SHA-256: 13add1cb9d604ca0797b613305d3f65e178071cd7f17616151eda987927a46c8Revision history and sources
How the versions relate
28.1 and 28.2 share an earlier source. 28.2 branches from R3.2 A; it does not inherit today’s 28.1 / R3.4 changes.
28 · frozen R3.1
R3.2 A · previously called 28.1
Shared source for both branches
R3.2 A → R3.3 → R3.4
Golden version 28.1R3.3 battery and USB changes, followed by R3.4 print simplification. Retains the original volume-button positions.
R3.2 A → 28.2
28.2 · Experimental branchRaises the volume buttons by 17.6 mm, with revised supports and a proposed switch-terminal bend. Physical validation remains open.
Website version 28.1 is engineering R3.4. This page and its downloads identify the same fixed print geometry. Filenames retain R3.4 for traceability. The prior R3.2 A release is archived; 28.2 is a separate design.
The latest R3.4 simplification of the R3.3 design, published as version 28.1. Includes editable Fusion files, full and individual STEP, the exact P1S print set, current assembly/material documents, a video explainer and a 3D model generated from this revision.
Fixed R3.4 print geometry; continued edits must use a new revision. Current CAD/source meshes and delivered print projects are unchanged by this website publication. No claim of completed switch, harness, RF, acoustic or production qualification.
Source: Autodesk Fusion R3.4 source archives, independently checked STEP/STL exports and saved-file reopen checks. Current website renders and Material Lab use these exact printed parts plus retained purchased-reference geometry; reference mesh, films and pads are not a fabrication BOM. · R3.4.