I'm building a production database, and the best example I have is that we need to have key stock placed on our engine we only need 1 3/4" worth per build but Fastenal supplies key stock at the shortest in in 12". We will receive the foot long stock, then cut it to length ourselves. So in reality we only need (1.75/12)=0.146 of the stock per build. Another example is we use reflector tape on our product, we receive a large roll of it, then only use a small percentage on a single build. I'm just not sure how I want keep track of items like this.