24hWallClock/README.md

# 24h Wall Clock
![Scorch marks for clock face](clock.svg "Scorch marks for the clock")

## Why?
Couldn't find a wall clock design I liked so made my own.

## No, but why?
I like the idea of a timepiece with one revolution per day instead of the one we're used to.
Clock face was designed in OpenSCAD as manually positioning hour segments and applying changes would be very cumbersome.


## Engraving & Cutting with Laser
As RDworks fails to properly read in the DXF exported by OpenSCAD, a detour through Inkscape is necessary (unless using Lightburn, I presume). If not using RDworks, skip following. From OpenSCAD export as SVG. In Inkscape save the exported SVG as a DXF file. That DXF file can be opened in RDworks.

Tips:
- Cut against the wood grain, not along (as in + not =).
- Mask the board with tape (painters or masking tape, the paper kind). This way smoke and soot wont tarnish the board.

On a 100W CO2 Laser With following properties:
- Engraving layer: 350mm/s@30% power
- Number edge cutting layer: 50mm/s@10%
- Outline cutting layer: 25mm/s@45%

Timing
- Engraving took ~45 min
- Number edge cutting ~3 min
- Outline cutting \<1 min

[CC BY 4.0](https://creativecommons.org/licenses/by/4.0/) license.