mirror of
https://github.com/Theaninova/Brick-Monorail.git
synced 2026-01-07 01:02:48 +00:00
47 lines
2.7 KiB
Markdown
47 lines
2.7 KiB
Markdown
# Parametric Monorail
|
|
|
|
## Design differences
|
|
|
|
Injection molding has vastly different requirements to 3d printing.
|
|
Due to this the original rails print absolutely horribly due to the copious amounts of supports needed.
|
|
Surfaces printed on supports just never look good.
|
|
|
|
Because of that, I decided to instead of having a support part on the bottom, I'd carve out space for
|
|
two stacked 1x2 plates, as well as a special two-high printable brick you can use for compatibility with the
|
|
old support mounts.
|
|
|
|
_These are 3d printing optimized, compatible rails, not replicas. Replicas print horribly due to support._
|
|
|
|
## Printing
|
|
|
|
To be compatible with standard bricks, the following print settings are recommended
|
|
|
|
- Nozzle: 0.4, this is equivalent to 1 LDU.
|
|
- Layer height: 0.1, though 0.2 will also do. Refrain from using 0.15, since that does not cleanly divides the LDU.
|
|
- Supports: Tree (normal supports may print faster, but lead to way worse results. But ymmv).
|
|
|
|
My prints were done on a modified SecKit SK-Go2 running Klipper, with 10k acceleration and 150mm/s print speed for a good
|
|
balance of speed and quality. A short rail will take about an hour to print.
|
|
|
|
### Filament
|
|
|
|
| Color | RAL Color | Pantone | PLA | ABS |
|
|
| ----------------- | ---------- | ------- | ----------------------------------------------------------------------------------------------------------- | --- | --- |
|
|
| Light Bluish Gray | `RAL 7040` | | [dasfilament 20,56€/kg](https://www.dasfilament.de/filament-spulen/pla-1-75-mm/8/pla-filament-1-75-mm-grau) | |
|
|
| Light Gray | `RAL 7005` | | | | |
|
|
|
|
- None of these colors will be an exact match, just the texture of 3d printing it can make a huge difference, but usually fall close enough in the range.
|
|
- The original rails will be in _Light Gray_, not _Light Bluish Gray_, but since I barely own any pre- 2004 color change bricks I chose to match my other bricks instead.
|
|
- Most bricks are injection molded from ABS, however I find PLA to be much more easy and safe to handle.
|
|
- PLA starts to deform at 60°C, so don't leave it in the sun or in your car.
|
|
- PLA is brittle. While ABS deforms with force applied to it, PLA will just snap.
|
|
- ABS is harder to print, an enclosure is a must, and warping can be difficult to handle.
|
|
|
|
#### Printing Safety
|
|
|
|
In case you are new to 3D printing:
|
|
|
|
- Most filaments (including PLA) release toxic gases when _burned_
|
|
- FDM printing can cause fine particle emission
|
|
- ABS when heated to normal printing temperatures can release styrene fumes
|