Your favorite OCC speaker cable

BS Neanderthal. The shoulders on your jacket would be a lot more droopy if you used the cables. 

Just make sure to use the plastic coated ones if you adopt a twisted pair configuration.

In outback Australia coat hangers are considered a bit OTT and recycled fencing wire is usually considered perfectly adequate. Wasting ya’ money @cmarineri.

What about PCOCC vs OCC? Real or merely a marketing ploy? Does that claimed super purity actually exist, and if so, does it make a difference?

So it appears that the claims of super purification appear to be valid. At their time of release there were naysayers (even metallurgists) claiming that five and six nines copper could not actually be formulated at a non astronomical cost, and that the whole concept was all a big scam.

The chosen materials can be put on the work bench and once done have a continuity test with a multimetre.

Unfortunately a multimeter is not sensitive enough to detect a crudely terminated connection which will deteriorate the sound, it will only detect non contact or gross defects. In the end it all comes down to experience and knowing how a good solder joint flows and what it looks like.

Having the right iron, the right temperature, the right solder and everything held solid in some kind of a jig are fundamental to achieving success.