Crank

I cut the crank off of a mountain bike. I now have a cylinder with little metal tube remains pointing in three directions. My plan is to secure it between three short poles with a joint known as a "bird beak," where the poles cross and pinch the cylinder between them. Excellent idea, but execution is difficult, since the poles need to be positioned with some tension. I've tanken the first step:

I cut two slots in one of the poles, that precisely correspond to the edges of the widest tube. Then I epoxied the crank onto the pole. Next I'll attach this pole, then add the others. The epoxy will allow the "unpinched" crank to hang in the air from just one pole.