String Trimmer Spool Winder for Ryobi Trimmers

thingiverse

This adapter lets you quickly wind Ryobi string trimmer spools from bulk using a drill. Simply slide the winder through the spool's hole, click it in place, and grasp the protruding part in the drill chuck. Then, carefully wind the filament onto the spool at a controlled pace. This enables rewinding a spool quickly and with minimal effort. The adapter comes in two sizes: one with 15 teeth and another with 7 teeth. It appears Ryobi changed to 7 teeth on some trimmer lines to make them advance faster. Check your spool for the tooth count to determine which version you need. If they change it again, this adapter works fine. Be aware that drills are power tools, and string trimmer line is designed to cut things fast when moving quickly. Attempt rewinding at your own risk only if you're familiar with safe power tool usage. A variable speed drill is necessary for this process.