{"product_id":"forge-plotter-arm","title":"Forge — Mini Plotter Arm","description":"\u003ch2\u003eWhat you build\u003c\/h2\u003e\n\u003cp\u003eA 3-axis pen plotter arm that draws on paper, cardboard, or small canvases. Calibrated for A4 paper. Perfect for generative art, signatures, and simple line drawings.\u003c\/p\u003e\n\n\u003ch2\u003eWhat's in the box\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003ePre-cut acrylic frame parts (4 pieces, laser-cut)\u003c\/li\u003e\n  \u003cli\u003e3× SG90 servo motors (X, Y, Z axes)\u003c\/li\u003e\n  \u003cli\u003e1× Tower Pro MG90S metal-gear servo (pen lift)\u003c\/li\u003e\n  \u003cli\u003ePen holder + 5 felt-tip pens (black)\u003c\/li\u003e\n  \u003cli\u003eM3 screws + nuts + spacers\u003c\/li\u003e\n  \u003cli\u003eArduino Uno + USB cable\u003c\/li\u003e\n  \u003cli\u003eStep-by-step build guide + Arduino code + web plotter UI\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eTools you need\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eComputer with USB port\u003c\/li\u003e\n  \u003cli\u003eSmall Phillips screwdriver\u003c\/li\u003e\n  \u003cli\u003eOptional: hot glue gun for permanent assembly\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eSkill level\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eIntermediate to advanced.\u003c\/strong\u003e Mechanical assembly, servo calibration, and basic Arduino code (provided). Be patient with calibration — first plot is rarely perfect.\u003c\/p\u003e\n\n\u003ch2\u003eTime to build\u003c\/h2\u003e\n\u003cp\u003e~6 hours total (2 hours assembly + 4 hours calibration + first drawings).\u003c\/p\u003e\n\n\u003ch2\u003eSpecs\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eDrawing area: A4 (210 × 297 mm)\u003c\/li\u003e\n  \u003cli\u003eResolution: ~0.5 mm (limited by servo precision)\u003c\/li\u003e\n  \u003cli\u003eWeight: 0.8 kg (assembled)\u003c\/li\u003e\n  \u003cli\u003ePower: USB 5V\u003c\/li\u003e\n  \u003cli\u003eSoftware: Web UI for SVG upload, or Python serial commands\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"OpenForge","offers":[{"title":"Default Title","offer_id":54620267675977,"sku":"OF-F001","price":129.9,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1018\/7672\/8137\/files\/F001-plotter-arm_0b656b3b-f1aa-4188-aa36-3413cb6fbb12.png?v=1781664887","url":"https:\/\/openforge.me\/products\/forge-plotter-arm","provider":"OpenForge","version":"1.0","type":"link"}