Food for thought.
First: From the shop of David Yates, a frame jig built from common & inexpensive materials, simple to build with minimal need for machined parts.
http://www.daveyatescycles.co.uk/upl...intriangle.JPG
Second: What I built with aluminum plate from the scrapyard, a bunch of jigsaw blades, some machined parts from Joe Bringheli and dummy axles from Anvil.
Attachment 69837
A long time ago I had a plywood jig much like the one above in its essence. It worked quite well and frankly I'd be perfectly happy with it now, as long as I had my surface plate to align tacked sub assemblies prior to brazing.
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