Is there a method to use regular 1" square aluminium extrusions? (1 reply)

I happen to have three lengths of 1" square aluminium extrusion. I realize openbeam, t-slot, v-groove etc is better, but I have here and it is free. I'm thinking of a Cerberus Pup/Kossel Mini printer. Any thought on how I can build carriages for regular square stock?

Thanks

Maxi