Make - GridBeam: How to get started?

Make - GridBeam: How to get started?

We found that the bolts that one wants to use are called "Joint Connector Bolts" (seen here: href="http://www.stafast.com/products/screws.html ) -- sometimes shortened as "Connector Bolts" (but that can be somewhat ambiguous if you're asking the person at Lowes for help finding them). if you can find (and afford) the "BA" variety, I imagine that's better, but locally we were only able to find the "BB" type. Here is one place ( http://www.baltimorehardware.com/hardware.cfm/Category/Joint-Bolt-Connectors.html ) that stocks them in many forms, but all BB type. As to the length, you have to be exact in the length on these, or else the flat nuts (that look like the heads) won't fit on the ends of the bolts. If you're going to be joining 2x2's (actual dimensions 1.5"x1.5"), we found that the perfect length of bolt is 70mm.