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

  • Frosted Snowflakes

    After the first two snowflake coasters, it finally penetrated my thick skill that putting a 1 mm hole in the flake cut from the center of the plywood would convert it into a decorative window hanging:

    Snowflake Hanger - plywood
    Snowflake Hanger – plywood

    Admittedly, I may be using the word “decorative” in a manner you had not previously encountered, but work with me on this.

    Cutting a similar flake from transparent acrylic looks better:

    Snowflake Hanger - blue acrylic
    Snowflake Hanger – blue acrylic

    Transparent acrylic turned out to be, well, too transparent, so I set up a LightBurn layout to “engrave” a light frosting on the flake before cutting it out:

    Snowflake Hangers - engraving in situ
    Snowflake Hangers – engraving in situ

    That worked for all subsequent flakes, but I had to do something about the first few flakes. After realizing that the time to engrave an object depends only on its width, I set up a rectangle with the proper parameters, snugged two forlorn flakes next to each other, and fired the laser:

    Snowflake Hangers - retroactive engraving
    Snowflake Hangers – retroactive engraving

    I thought using cardboard was a Good Idea™ for a stable backing, but lightly vaporizing the top layer produced an unbelievable amount of filth:

    Snowflake Hangers - frosted
    Snowflake Hangers – frosted

    I had to scrub those poor flakes with dish detergent and a toothbrush to get them even close to their former pristine state; the blue one may never recover.

    Anyhow, frosted flakes look good if you don’t look closely:

    Snowflake Hangers - frosted
    Snowflake Hangers – frosted

    The grid pattern comes from the window screen in direct sunlight; the vertical bars are DIY BirdSavers.

    The LightBurn layout produces 120 mm coasters to fit my 20 ounce mugs:

    Snowflake Coaster 120 mm - LB Layout
    Snowflake Coaster 120 mm – LB Layout

    You get two hanging flakes: one plain plywood and one frosted acrylic!

    The LightBurn SVG layout as a GitHub Gist:

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