Decorative Vase Fly Trap - LED & No-LED Version

🪰 The Last Vase Your Flies Will Ever See

Let's be honest: your kitchen has a fly situation, and that sad cup of vinegar with cling-film on top isn't fooling anyone — least of all the flies. They've seen it. They've adapted. They're mocking you.

This is the upgrade. It looks like a tasteful little fluted vase. It is, in fact, a maximum-security fly prison hiding in plain sight on your countertop.

😈 How it works — a tragedy in three acts

Act I — Temptation. Bait goes in the hidden cup at the bottom. The smell drifts up and out the top. A fly catches the scent and thinks: "free lunch."

Act II — The Descent. It follows the aroma down the wide inverted cone, which funnels it straight toward a tiny 9 mm hole. Going in, that hole is a giant, obvious target. In it goes. 🎉

Act III — The Realization. Now it wants out. But flies instinctively flee UP, toward light — never back down toward a tiny hole pointing at the floor. It bumps the walls. It panics. It does not find the hole. Curtain falls. 🎭

No batteries. No zapping. No chemicals. Just 200-year-old glass-wasp-catcher physics, wearing a vase costume. The cone is a one-way valve — and flies are terrible at reading the exit signs.

🖨️ Print Profiles — pick your fighter

Every profile comes in PETG and PLA (your call — both print great, no supports needed):

Plates = how many build plates the profile splits the parts across. More plates = more separate color swaps = more flexing rights. LED port = a small hole in the bottom cap for an LED wire; "No Light" profiles seal it shut.

💡 Optional LED Glow-Up

The With Light profiles add a wire port in the base for a small LED. It makes the whole vase glow like a cursed lantern and the extra light pulls even more flies in. Aesthetic and lethal.

LED I used → amzn.to/4nRVC5J (paid link)

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📺 Install video — 60-second job, no soldering, just cut on the indicated lines on the strip.

🛠️ Print & Assemble

• Material: PLA or PETG
• Layers: 0.2 mm  ·  Walls: 3  ·  Infill: 10–15%
• Supports: none — every overhang is ≤ 45°

Drop the bait cup into the cap → screw on the body → screw on the cone top. Done. To rebait: unscrew the cap, lift out the cup, rinse, refill.

🍷 Bait Guide — the science of luring tiny idiots

Fruit flies evolved to sniff out fermentation. Studies agree on one thing: it's the blend of fermentation compounds that reels them in — never a single chemical. Ranked by actual research:

One drop of dish soap is optional here. It's not an attractant — it kills surface tension so a fly that lands on the liquid sinks instead of strolling off. This trap already catches flies with the cone, so soap is just a tidy bonus kill.

TL;DR: wine + raw ACV + a drop of soap. Lazy mode: raw ACV straight. Leave the cup uncovered a few minutes before sealing — more aroma escapes, more flies commit. Swap bait every few days; once it dries out, the buffet's closed.

Default size: 155 mm tall × 70 mm wide.

Print it. Bait it. Watch the little airborne menaces walk willingly into their doom. Then come back and post a make — bonus points for a body count. 🪰⚰️

Happy trapping.