To survive outside, I’d really like to have the signals made of steel. The one in the above picture is made out of steel tube and steel washers. I need to find oval washers that arent stainless steel. So far all I’ve found are either SS ones, or expensive per-unit, and I really dont like the cost, or the idea of drilling holes in SS.
These are what I’m looking for, but not at a buck and a half each.








