Display Parts FDM Fabrication¶
Filament Quantity¶
Below is a table of quantities of filament by weight. Since a roll of filament is generally 1000g (sometimes a bit less), you'll need two rolls of White Matte PLA.
| Type | Weight (g) |
|---|---|
| Black Nylon | 77.1g |
| Black Matte PLA | 272.42g |
| White Matte PLA | 1535.44g |
| Black TPU | 115.15g |
1. Black Nylon, Smooth Build Plate¶
For Orca and Bambu Studio slicers, see fdm\3mf\nylon-smooth-black.3mf.
| File | Description | Density | Quantity | Per Unit (g) | Total (g) |
|---|---|---|---|---|---|
digit-gear30.stl |
Pinion gear for digits and colons | 100% | 30 | 1.1 | 33.0 |
rack-gear.stl |
The arm of the actuator that extends and retracts the segment | 25% | 30 | 1.47 | 44.1 |
2. Black Matte PLA, Smooth Build Plate¶
For Orca and Bambu Studio slicers, see fdm\3mf\pla-smooth-black.3mf.
| File | Description | Density | Quantity | Per Unit (g) | Total (g) |
|---|---|---|---|---|---|
digit-back-plate.stl |
Back plates for digits 0 and 3 for mounting the actuators | 50% | 2 | 47.43 | 142.29 |
digit-gear10.stl |
Motor shaft gear mounted onto the heavy-duty 103 motors | 100% | 30 | 0.5 | 15 |
digit1-back-plate.stl |
Conductor and digit 1 back plate for mounting the actuators | 50% | 1 | 67.7 | 67.7 |
digit2-back-plate.stl |
Back plate for digit 2 for mounting the actuators and powerbank/display stand | 50% | 1 | 47.43 | 47.43 |
3. White Matte PLA, Smooth Build Plate¶
You have two options: powerbank.stl or powerbank-small.stl. Print the powerbank.stl and powerbank-cover.stl if you have household animals that might have access to the back of the display. Print powerbank-small.stl to keep a lower profile of the back of the display. Mounting powerbank.stl and powerbank-small.stl is the same for both sizes.
For Orca and Bambu Studio slicers, see fdm\3mf\pla-smooth-white.3mf.
| File | Description | Density | Quantity | Per Unit (g) | Total (g) |
|---|---|---|---|---|---|
digit-motor-mount.stl |
Motor mount for digits and colons | 100% | 30 | 12.77 | 383.1 |
powerbank-cover.stl |
Cover for large stand (optional) | 100% | 1 | 65.53 | 65.53 |
powerbank.stl |
Large stand (optional), buck converter mounts, and powerbank PCB mount | 100% | 1 | 146.75 | 146.75 |
powerbank-small.stl |
Small stand (preferred), buck converter mounts, and powerbank PCB mount | 100% | 1 | 116 | 116 |
rackgear-bumper.stl |
Stops the segment or colon at the precise distance when extended | 100% | 30 | 0.61 | 18.3 |
seg-pin.stl |
Pin to hold the rack gear onto the segment and colons | 100% | 30 | 0.4 | 12 |
4. White Matte PLA, Textured Build Plate¶
For Orca and Bambu Studio slicers, see fdm\3mf\pla-textured-white.3mf.
| File | Description | Density | Quantity | Per Unit (g) | Total (g) |
|---|---|---|---|---|---|
colon-seg.stl |
Colon, upper and lower | 100% | 2 | 1.88 | 3.76 |
digit0-1-face.stl |
Kinetic display face, right side (when facing the front, textured surface side) | 70% | 1 | 395 | 395 |
digit2-3-face.stl |
Kinetic display face, left side (when facing the front, textured surface side) | 70% | 1 | 399 | 399 |
seg-a.stl |
Digit 7-segment A | 100% | 4 | 4 | 16 |
seg-b.stl |
Digit 7-segment B | 100% | 4 | 4 | 16 |
seg-c.stl |
Digit 7-segment C | 100% | 4 | 4 | 16 |
seg-d.stl |
Digit 7-segment D | 100% | 4 | 4 | 16 |
seg-e.stl |
Digit 7-segment E | 100% | 4 | 4 | 16 |
seg-f.stl |
Digit 7-segment F | 100% | 4 | 4 | 16 |
seg-g.stl |
Digit 7-segment G | 100% | 4 | 4 | 16 |
5. Black TPU, Smooth Build Plate¶
For Orca and Bambu Studio slicers, see fdm\3mf\tpu-smooth-black.3mf.
| File | Description | Density | Quantity | Per Unit (g) | Total (g) |
|---|---|---|---|---|---|
digit-gasket.stl |
Gaskets for digits 0 and 3 to cushion the PCB during segment retractions | 15% | 2 | 17.86 | 53.58 |
digit1-gasket.stl |
Gasket for the conductor and digit 1 to cushion the PCB during segment retractions | 15% | 1 | 31.71 | 31.71 |
digit2-gasket.stl |
Gasket for digit 2 to cushion the PCB during segment retractions | 15% | 1 | 17.86 | 17.86 |
rackgear-bumper-gasket.stl |
Provides some cushion for the rack gear when extended | 100% | 30 | 0.4 | 12 |
Guidelines¶
Below are a few guidelines to keep in mind when printing and assembling the display:
- Read the assembly guides: Read all the assembly guides in this documentation before printing to ensure you have a clear understanding of the fabrication type, quality, positioning, and assembly.
- Use the provided 3MF and STL files: The 3MF project files are included under the
./fdm/3mfdirectory for Bambu Studio or Orca Slicer users. All necessary settings are included at an object level, not on a global level. STL files are included under the./fdm/stldirectory. - Consistent filament usage: The display face uses over 2/3rds of a 1 KG roll of filament. Use the same roll of filament when printing both halves of the display face, segments, and colons. Ensure you have two 1 KG rolls of white filament from the same batch to avoid inconsistencies in print color.
- Dry your filament: Thoroughly dry your filament before use, especially nylon and flexible filament types. Wet filament can cause stringy prints and result in inexact gear teeth or hole sizes.
- Adhesion to the print bed: Apply an adhesive to the printer plate bed to prevent warping of edges and corners. For example, all-weather Aqua Net super hold hairspray provides an even coating of adhesive across the bed plate and results in clean corners and edges.
- Organize printed parts: Use painter's tape to keep the pieces organized. See the picture below for an example. Note that segments A-G (left to right) are preserved the moment the bed plate is removed from the 3D printer.
- Ironing is optional: Do not worry if your 3D printer and slicer cannot iron the top surfaces. Ironing is for fit and finish and will not affect the functionality of the display.