3Dプリンターの活用で見落とされがちなのが「食品関連グッズ」なんです。Redditの「r/EtsySellers」で話題になっているのが、カスタムクッキー型を3Dプリンターで作って販売しているビジネスモデル。アメリカのとある主婦セラーが月2,000ドル（約30万円）の安定収入を得ているという投稿がバズっていました。

使っている機材はEnder 3 S1 Pro。日本では3万円台で買えるエントリー機です。素材はPLAではなくPETG。食品に直接触れることへの配慮で、食品安全性を意識してPETGを選んでいるとのこと。

When we talk about 3D printing applications, a sector often overlooked is food-related goods. Recently, a fascinating side hustle has been making waves on Reddit's r/EtsySellers: selling custom 3D printed cookie cutters. One particular post went viral, sharing how an American homemaker is consistently earning $2,000 a month (approximately 300,000 JPY) from this very business!

The Setup and Materials

The equipment she uses? An Ender 3 S1 Pro, an entry-level FDM printer that costs around $200 (approx. 30,000 JPY). For materials, she opts for PETG instead of PLA. While the cookie cutters don't directly touch food during baking, she chooses PETG for its perceived food safety, just to be on the safe side.

クッキー型が選ばれる理由

市販のクッキー型はハートや星など定番デザインばかり。でも実際の需要は「推しキャラの形」「ペットの顔」「会社のロゴ」「ウェディングのイニシャル」など、完全カスタム品なんです。そこに市場のすき間があるとのこと。

Etsyで1個15〜30ドルで販売していて、デザイン費込みでも利益率が取れているそうです。注文ごとにTinkercadやFusion 360でデータを作り直して出力するというフロー。1件あたりの作業時間は設計1時間・印刷2〜3時間ほどとのこと。

参入するなら今かもしれない

3万円台のプリンターでこの収益が出るなら、初期投資の回収は早そうです。ただし日本でEtsyで稼ぐには英語対応が求められるので、そこがハードルになりますね。国内のminneやCreemaでの展開も面白そうだと思っています。

Why Custom Cookie Cutters?

Walk into any store, and you'll find cookie cutters mostly in standard shapes like hearts and stars. But there's a huge demand for completely custom designs: think favorite anime characters, pet faces, company logos, or wedding initials. This is where 3D printing truly shines! Traditional molds can't handle one-off custom orders, but a 3D printer can churn out a unique design in just a few hours. Individual cutters sell for $5-15, while sets (like a full alphabet) go for $30-50. The material cost per cutter is a mere $0.20, and design work in Fusion 360 takes about 15 minutes per piece.

The Order Flow and Low Barrier to Entry

She lists "Custom Cookie Cutter Commissions" on her Etsy shop. Buyers send their design requests (photos or illustrations), which she then models in Fusion 360, 3D prints, and ships. The standard turnaround is 5-7 business days, with rush orders (+ $10) completed within 3 days. A key feature is the high number of repeat customers; once they get a custom cutter for their favorite character, they often return for personalized name cutters for friends' birthdays. The barrier to entry is quite low here. You don't need expensive resin printers; an affordable FDM machine is sufficient. Since cookie cutters are essentially extruded 2D shapes, you can start with minimal CAD experience. Plus, ThingiVerse offers tons of cookie cutter templates to customize for beginners!