How to Make a Quill Seatpost or Expanding Seatpost - DIY Bicycle Repair

Learn how to create a custom quill/expansion/wedge seatpost in this detailed 15-minute tutorial. Discover the process of fabricating a replacement for hard-to-find seatposts used in 1980s bicycles, including Schwinn aluminum road bikes. Follow step-by-step instructions on assembling the necessary components, including a 27.2mm seatpost, a 240mm M8 stem bolt, and a 1 1/4" oversized mountain bike quill stem. Gain insights into using a drill press for precision work, with tips on alternative methods using hand drills or metal lathes. Exercise caution when working with power tools and explore options for acquiring or borrowing the necessary equipment if unavailable. Perfect for DIY enthusiasts and vintage bicycle restoration projects.