[Gdeaver]

We used rivets from Mcmaster-carr. Part # 97519A653. I would caution riveting right from the beginning. If you make a mistake and need to drill out the rivets, it's a pain. We put the frame together with bolts and riveted after we were sure of the dimensions. There are higher strength rivets available, but they are very very difficult to remove. For the last couple years we have used the kit frame and riveted 1 x 1/8" 6061 angle on to the KOP base. It has been very effective. Our team lis low on skills, money and machining ability. It worked for us. Last year it took the students forever to build the frame. This year we are going to use the 8020 quick frame. It realy is quick to build a frame.