[Mike Martus]

As per the rules you may use Angle, box or round Alum.

You may NOT use speciality alum. extrusions. This includes 80/20 Alum, Bosch or the extrusions that can be bolted together. Several teams in FIRST used this type last year.

The intent is to use materials found at the local Home Depot or Lowes. Not materials ordered form speciality companies.

If you are not sure the Alum you are using fits our definition, please send me a picture (cross section). better to be safe than sorry.