Wow. The OpenBeam Kickstarter really pulled through, and ...it's nice stuff! We invested in the MakerBeam stuff a while back, and it's been great for some tinkering, but this OpenBeam really pours on the utility-sauce!

Designed around metric hardware standards (yeah, seems metric is the way to go with this stuff!), the OpenBeam 1515 extrusion features 4 slots that perfectly capture a M3 hex nut or the head of a M3 hex head cap screw. 

The center hole channel in the beam can also be tapped to accept an M3 screw, for nifty end-mounting applications The channels down each side of the beam are 3mm wide, handy for 3mm acrylic, 1/8" wood. Thinner material like (interestingly enough) standard 0.062" circuit-boards fit nicely into the single thin channel that runs down the center spine. It's a really well thought-out profile, which is sure to see lots of applications in the DIY machine field!

OpenBeam Extrusions are 60x15x15mm (LxWxH)