A couple of years ago I made my own standing rigging from Amsteel Blue. Should have used Dux. Amsteel has too much constructional stretch and I ran out of adjustments when it creeped a bit longer over time. Redid the splices on the top shrouds twice then went back to wire because I wasn't confident in my work, in the final rethinking. Used it for a few months but didn't want to risk the rig. Want to buy some 7/16" Amsteel? Wasted quite a bit of cash on that but had fun and learned a few things.