I have recently discovered a great tool for making mitered binding. It's called the Quick and Easy Mitered Binding Tool by Sew Biz. Ask for it at your local quilt shop or shop online. It's
Add-On Binding using the Bound to Fit Tool (August 8, 2021)
Quick Easy Mitered-Binding Tool
Product Review - Quick Easy Mitered-Binding Tool - The Crafty Quilter
Easy Miter Binding Tool® – RunMDeal
Quick Easy Mitered Binding Tool
Quick Easy Miter Binding Tool
Quick Easy Mitered-Binding Tool
Mitered Binding for Different Angles
Easy Binding Tool - With Instructions