stripping wire

Math and scrap are for you to understand if you want to succeed. Percent of copper can be determined with a scale and some math. Take it to the next level and factor in your time as well. Weigh your insulated wire. Strip and document your time. Weigh your copper. Divide your copper by your insulated weight. That is your recovery %. Please don't discount your time. It isn't always worth the effort to produce a higher quality product.