The Smell of Molten Projects in the Morning

Ed Nisley's Blog: Shop notes, electronics, firmware, machinery, 3D printing, laser cuttery, and curiosities. Contents: 100% human thinking, 0% AI slop.

The New Hotness

  • OMTech 60 W Laser: Plant Markers

    While calibrating the laser’s scan offset, I also tried various fonts:

    Offset cal - text - overview
    Offset cal – text – overview

    Putting two lines of the most-readable font inside an outline reverse-engineered from a few handwritten samples let me cut out a bunch of plant markers from white-on-black Trolase acrylic:

    Plant Markers - cutting
    Plant Markers – cutting

    Which look downright dignified in real life:

    Plant markers - African Violet
    Plant markers – African Violet

    Admittedly, sweet potato slips don’t require such extensive documentation:

    Plant Markers - sweet potatoes
    Plant Markers – sweet potatoes

    Cutting the sheet flat on the honeycomb platform worked well, modulo Sadler’s warning about cutting acrylic, and a few smudges on the back of the markers will go unnoticed.

    This was actually an excuse to use LightBurn’s Variable Text feature, so the tags contain formatting codes:

    Plant Markers - Variable Text template
    Plant Markers – Variable Text template

    The codes give the position and format for text fields in a CSV file containing one line for each tag:

    Austrocylindropuntia subulata,Eve’s Pin Cactus
    Euphorbia,abyssiniaca
    possibly G. Carinata,var. Verucosa
    African Violet,Maui
    Sansevieria trifasciata,Mother in law’s tongue
    Plectranthus,'Mona Lavender'

    The rules governing quoted strings and suchlike remain to be explored, but single quotes in the CSV file pass through unchanged.

    Putting a tab at the point of the marker will prevent it from falling free when cut out, should you want to try raising the sheet above the platform to reduce the amount of crud accumulating on the back side.