✅ 【Smart Auto Start & Stop – 3D Filament Spool Winder】Equipped with a precision filament detection sensor, this spool rewinder automatically starts or stops when material flow changes — preventing tangles, overfilling, or wasted filament. Enjoy fully automated, hands-free winding for your 3D printing or craft materials. ✅ 【Automatic Start & Stop Function】This intelligent filament respooler features built-in software programming for advanced users. Adjust speed, tension, motor direction, and lighting, and upgrade firmware easily via computer connection — achieving precise and personalized control for every project. ✅ 【 Wide Compatibility – Universal Wire Spooler】Filament winder is suitable for any wire with a diameter of 4mm or less, including solder wire, yarn, and 3D printing filament. Note: Only 1.75mm filament supports intelligent start/stop detection. For thicker wire, you can enlarge the feed hole using a simple tool. ✅ 【Fast, Tangle-Free & Efficient】Quickly and smoothly transfer filament, welding wire, or sewing thread from large industrial reels to compact spools. Experience even, organized winding that saves time and eliminates material waste. ✅ 【Quiet & Universal for Makers】Built from reinforced abs with a smart, low-noise motor, this electric spool rewinder runs stably and efficiently for long periods. Perfect for 3D printing labs, workshops, and DIY creators — compatible with PLA, ABS, PETG, and other filaments up to 1 kg.