How to manufacture a cable ?

Be very knowledgeable about intellectual property laws, or lack thereof, in countries where you might be considering manufacturers for your cables.

Just out of curiosity what type of initial run are you looking at. If it's a small t5o moderate amount I might know someone who can help you.

While Thorman makes a good point, I am curious as to whether you are actually talking about the marketing aspect, or the manufacturing process in terms of constructing the cables in preparation for marketing.

If the latter, then the answer really depends on whether you have the time and money to do this yourself or if you will need to subcontract.

Either way a good test is to have a few pair made up and ask some audiophiles to beta test them for you. I have done this on occasion with both cables and equipment. The opinions you receive could be very valuable in helping you sort all of this out.