Instructables:

Here’s a jig for building bicycle frames. This design is something I’ve been slowly picking away at for several years. Being both a cheapskate and not having much in the terms of machine tools and/or skills to use them, I’ve slowly come up with this design.

It’s based off the easily available 8020 extrusion, and repurposes a lot of the 8020 small parts. I’ve tried to make every part requires as little machining as possible. In many cases, I’ve designed individual parts so that they can be initially made with as little tooling as a drill press, and slowly replaced with nicer machined parts as time/money/tooling allows.

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