polyurethane tubing

[big1boom]

We welded the solid orange polychord with a standard propane torch.

Just melt both ends that you want to connect
Place them in a piece of Angle Aluminum, with the two ends in contact.
Hold for 5-10 minutes till cool.

This resulted in a weld that was strong enough that two people doing tug-of-war could not rip it.

The welds might not be the prettiest, but they work amazingly, and don't jump off of our pulley's

If I remember correctly, the polychord on our bot had a tension of somewhere more than 30%. (I think I remember it being 35%, but I might be wrong.)