I used VISUAL ERP scheduling
When I was a Plant Manager at a rotary die manufacturer in 1994, I bought VISUAL. The biggest problem I was trying to solve was scheduling the shop floor. We were in an industry that demanded 2-4 day lead times. Everything we did was custom; each work order had around 20 operations. It was rare for me to get a question about our ability to produce a die, because we had all the right type of fabricating equipment to produce a die. The real question was if we could produce it in the lead time the customer provided. In other words, did we have enough open capacity to do what the customer wanted us to do?