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.

Tag: Art-ish

They might be Art

  • Magnetic Stirrer Resurfacing & Mug Decoration

    Magnetic Stirrer Resurfacing & Mug Decoration

    Half a year of plunking my morning cocoa mug on the magnetic stirrer had pretty well scuffed up its platform, so this seemed like a good idea:

    Magnetic stirrer - vinyl surface
    Magnetic stirrer – vinyl surface

    Rather than add the blue disk to the small-scraps collection, I converted the Squidwrench logo into a LightBurn layout:

    Squidwrench logo - laser cut layout
    Squidwrench logo – laser cut layout

    The roll of transfer tape I have on hand doesn’t stick well to the polyurethane sheet, so easing the vinyl onto the mug required careful tweezer work:

    Squidwrench logo on mug
    Squidwrench logo on mug

    It’s on the other side of the mug from the original, somewhat battered, logo.

    Now we can learn how long polyurethane sheets survive under the same conditions.

  • Danger Zone Earrings: Wood Edition

    Danger Zone Earrings: Wood Edition

    They’re not fancy marquetry, but they look pretty good:

    SCP Earrings - wood veneer
    SCP Earrings – wood veneer

    The darker areas are laser-engraved with the usual SCP warning label geometry.

    The left set was engraved through blue masking tape, which increased the exposure, added no benefit, and required fiddly cleanup. Won’t make that mistake again.

    The middle one has the darkest wood of the set with the lighter part not exposed to the laser.

    They’re slightly smaller and much lighter than the plastic versions in order to fit them on the remaining DIY veneer plywood from the knitting stitch counters.

    Rather than make another fixture for the backside branding, I cut adapters using the two outlines and dropped the hollow triangles into the fixture:

    SCP Earrings - wood cutting fixture
    SCP Earrings – wood cutting fixture

    Two layers of veneer feel about right, although the layers should not have their grains oriented in parallel as these do. The PSA sheet on the back veneer holds them together, but they’re too flexy for confidence.

    The contrast between gentle natural wood (using a generous interpretation of “natural” for veneer with a PSA layer) and the SFnal SCP warning label symbology is definitely amusing.

  • Danger Zone Earrings: Einsteins!

    Danger Zone Earrings: Einsteins!

    A chance encounter in the acrylic scrap box led to a radioactive einstein:

    SCP Earrings - Radioactive einstein
    SCP Earrings – Radioactive einstein

    That was so easy it’s gotta be either criminal or sinful.

    A few test on scrap acrylic while tweaking the SCP warning label geometry showed only a few work well at such a small scale:

    SCP Earrings - einsteins
    SCP Earrings – einsteins

    The mirror in the lower right got cut from the back side, making it the mmmm mirror image of the others.

    IMO these would look and cut better in 1.5 mm acrylic, but it seems edge-lit acrylic only comes in 3 mm sheets.

    They are absurdly fragile across the waist, but my admittedly limited exposure to fine jewelry suggests durability ranks low in the selection checklist.

  • Danger Zone Earrings: Engraved Trolase

    Danger Zone Earrings: Engraved Trolase

    Engraving the vector SCP warning label geometry into yellow-on-black Trolase reduces the handwork to wiping off the dust:

    SCP Earrings - Trolase - engraving
    SCP Earrings – Trolase – engraving

    The alert reader will note two missing holes due to an unfortunate oversight while rearranging the layout. One can adroitly fix such errors if the cut shapes don’t move, which is how it worked out:

    SCP Earrings - Trolase
    SCP Earrings – Trolase

    With the obverse done, another fixture aligns them for a branding pass on the reverse:

    SCP Earrings - Trolase - branding
    SCP Earrings – Trolase – branding

    This is starting to make sense in a peculiar sort of way …

  • Danger Zone Coasters

    Danger Zone Coasters

    Scaling the vectorized SCP warning labels to fit 4 inch cork disks produces a stack of Danger Zone coasters:

    SCP Coasters
    SCP Coasters

    I particularly like the Cognitohazard and Autonomous Object symbols. The Nonstandard Spacetime symbol comes in dead last; if you make one, use very little kerf offset.

    Come to find out yellow is utterly unforgiving of smudges / smoke stains; orange is better, albeit non-canon. I cut them face-up through a layer of blue masking tape, which worked surprisingly well, except for a few areas where I didn’t apply enough paint: the chipboard fibers became one with the tape.

    The cork disks arrive pre-cut with a PSA sheet, so using a jig for better alignment with the assembled chipboard layer would be a Good Idea™. These were assembled by feel, which is good for about half a millimeter.

    A better process: cut an array of the shapes from a large yellow sheet, fit the black inlays from the back, stick the whole affair to a large cork sheet, then cut the circular outlines where small misalignments wouldn’t matter.

    In production, it would make more sense to cut all the pieces from blank white chipboard, paint them in groups, then assemble everything.

    Best: having me realize nobody else wants coasters.

  • Danger Zone Earrings: GITD Set

    Danger Zone Earrings: GITD Set

    Embiggening the SCP symbols used on the yellow vinyl-on-acrylic version improves their proportions:

    SCP Earrings - GITD vs vinyl PSA
    SCP Earrings – GITD vs vinyl PSA

    The black-on-white look come from vinyl PS atop GITD tape atop some transparent red acrylic, which looks a whole lot better in its natural environment:

    SCP Earrings - GITD in action
    SCP Earrings – GITD in action

    Making those ten samples requires 15 minutes of laser time (mostly kiss-cutting the patterns at maybe 5 mm/s) and another 25 minutes of weeding and primping. I’m not convinced this is an economically feasible activity, but I really like the results.

    Nah, I’m still not getting my ears punched.

  • Danger Zone Foam Coaster

    Danger Zone Foam Coaster

    A small coaster laser-cut from scraps of EVA craft foam:

    Biohazard foam coaster
    Biohazard foam coaster

    It’s all of 60 mm OD, so not particularly practical, but it (and its predecessor, a complete botch) helped show the laser kerf in EVA foam is an astonishing 0.6 mm, when cut at 125 mm/s with maybe 30 W.

    The white outer shape is the nominal size, so holes are 0.3 mm larger on all sides than the pattern. The tan inner shapes get a 0.6 mm outset (!) to make them larger, which definitely squared up the horn tips. The fit is snug, but another 0.1 mm might be even better.

    The pieces stick to a 60 mm circle cut from cork with a PSA layer, which makes it entirely too bendy.

    If you wanted to do this for real, all the patterns would require tweakage to make the smallest features about 2 mm. The huge kerf ate the 1 mm struts around the central white disk and the tan circles should clear the horn stems by 1 mm, so that’s just barely enough.