Powered Yarn Spinner
Description
NOTE: Thingiverse prevents larger files from being uploaded, including PDF files. Unfortunately, these restrictions prevents me from uploaded my build guide, here. Instead, you can find the build guide, as well as high resolution images at the following 3D models site: https://grabcad.com/library/powered-yarn-spinner-1 This project is for those that have a need to spin yarn into a tightly meshed ball so that the yarn can be neatly stored or used. There are inexpensive manual yarn winders for this spinning purpose. These winders typically have a handle for the user to rotate to spin the yarn and cost typically US$20-30. Powered winders are also available, but at a much higher price of US$300-600. My project creates an electrically powered yarn winder. The electric winder sources some parts from a manual winder, adds an electric motor, all combined with custom designed 3D printed parts and power by USB-C. I welcome those wishing to reproduce my yarn spinner as I built it. I do warn, this project is for an experienced builder. The following skills will be required: - Ability to cut steel - Ability to source like components. - Ability to 3D print my designed parts. - Ability to solder electrical wires. Parts List: - Yarn spinner (for parts) - 3D printed parts. - RS445-ST/18140/DV DC motor with 14 pins fitted gear. - MT3608 DC-DC inverter module. - 5mm 40mm bolt, washers and 2 nuts. - 6mm 20mm bolt, washers and 2 nuts. - Toggle switch SPST - USB-C panel mount socket. - Potentiometer 20KOhm, panel mount. - Resistor 10 Ohm, 0.25W - 5V LED indicator - 6mm knob - Electrical wire, typically 22awg. To get sufficient torque from the electric motor, gears are used. The two motor drive gears provide a ratio of about 3:1, transforming surplus speed into extra torque. The DC motor I used is a salvaged RS445-ST/18140/DV motor with a metal gear with 14 teeth. Ø=34mm x 52mm and weighs about 90g. These motors can be purchased new or used for around US$10. eg. https://www.ebay.com/itm/295128355202 The electric motor is a nominal 12V DC. I control the motor speed by starting with 5V from a USB source and via a buck inverter (MT3608), vary the voltage from 5 to around 12V. The motor typical is running at 3-4W of power, hence a simple 5W USB plug pack can comfortably power the unit. My print is made in PLA+ 1.75mm eSUN Gold filament, with 0.2mm layer height and 15% infill on a PRUSA I3 MK3S printer. Some parts will need print supports to properly form. I hope you can find this project useful, too.
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