Mitering the Downtube for My Hardtail MTB Frame!

The hardtail mountain bike frame build continues. Today: Downtube mitering!

First, I cover a bit about tube rolling and dealing with bicycle-specific tubing (butted tubes, specifically). I discuss how I rough cut my tubing to length and how I use BikeCAD to determine the length and angles I need for mitering. Then I make the miters at both ends of the downtube (using hole saws in a Bridgeport vertical mill), and I demonstrate how to fine-tune the fit-up between the downtube and head tube with a hand file.

Here is the playlist of the whole Hardtail Mountain Bike Frame Build—I'll keep adding to it as we go: https://www.youtube.com/watch?v=0okGsgYBObc&list=PLh0BOtXK_s5edhuy-y5C6E41UT-ZLGukE

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MUSIC: "Star Eyes" by urpleactus (https://soundcloud.com/urpleactus)

Видео Mitering the Downtube for My Hardtail MTB Frame! канала Cobra Framebuilding