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

  • Laser-cut Cutworm Collars

    Mary, having had considerable trouble with cutworms in her gardens, routinely deploys cardboard collars around new plants:

    Cutworm Collars - assembled
    Cutworm Collars – assembled

    It seems cutworms trundle around until they find an edible plant, chew through the stem and topple the plant, then trundle off without taking another bite. A small cardboard barrier prevents them from sensing the plant: apparently, motivation to climb a short wall hasn’t yet evolved.

    Up to this point, Mary applied scissors to tissue boxes, but I proposed an alternative with an adjustable fit to any plant:

    Laser Cutting Cutworm Collars
    Laser Cutting Cutworm Collars

    A splayed cardboard box rarely lays flat, a condition enforced by a few MDF stops used as clamps.

    Come to find out no two tissue boxes have identical dimensions, even boxes from the same brand / retailer, so lay out duplicates of the collar template to match your stockpile.

    That was fun!

    The SVG image as a GitHub Gist:

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