1x7 galv. for rigging

[Brion Toss]

Hello,
Do you know what grade of 1x7 you have? Strengths vary immensely. So do levels of galvanizing. You will not be able to splice it, and it is extremely stiff stuff to take around any normal radius. It's really not the right construction for sailing rigging, no matter how cheap you find it. Probably best either to invest in English galvinized wire, or to go with stainless. As for the SF of 3:1, it seems hard to justify, if you can have the right rig instead.
Fair leads,
Brion Toss