If I wanted to make my own speaker cables, is this a good choice for wire?

Yeah i have set 8/not in use? ...too tough to crimp for me...solder good idea.

Interesting that you went from discussing speaker cables to interconnects, with no mention of what you are planning to connect with these cables.

If you are interested in tinned copper wire, you might also take a look at this wire from a well-regarded company.   OTOH, there are many other bulk cables for consideration, depending on your goals.  Tinned copper has its attractions and its uses, which IMO are generally a nice full midrange with a colorful, warmish tone, and full-sounding bass, and that it is best suited in power cords, speaker wire, and interconnects, in that order.  It is just ok in the high frequencies and in resolution.  It does seem however to be one of the few bulk cable choices that can be used, as-is, for PCs, SCs, or ICs.  I have made multiple cables with the Duelund wire, Jupiter  Condenser wire, and old stock Western Electric wire and they all have their own characteristics and strengths, IMO/IME.

if you shared your specific equipment and specific sonic goals, plus your general budget range, you might get more meaningful answers instead of everyone’s generic go-to cables.

@vonhelmholtz 

I found some conservations about it and was wondering if it was still viable.

@mitch2

Sure, my setup is a Rogue Cronus Magnum 3, Chord Qutest, iFi Zen Stream and the Omega Super 3 High Output XRS speakers mentioned earlier.

I don't have any specific goals in mind, I'm just looking to build some cables for something to do.

I would think a thicker gauge

speaker wire, 12 gauge, wouldn’t

hurt you.  Good luck.