Del just made one of the best posts that I have ever seen on TU.Very honest and forthright.
If anything he low-balled expenses and forgot a few.$15,000 to connect 3 phase,even if the wire runs over the shop.
You have coolant disposal costs.Most vendors want annual(or more frequent) certifications like ISO or QS.Initial costs can easily exceed $50,000 or more.Annually about 1/5 the initial.
If you think you are going to pay the bills making molds for lure crafters,your machine will be at auction soon.
One thing that Del and Bob are too nice too talk about is bad customers.Business is learning that there are customers "who are not right."The old "customer is always right" has been ruined by the bad customer.You could tell them 2 week delivery at best, probably 3 and no more than 4 because your making parts for the war.While waiting he complains to his buddies about the wait and doesn't know why when he is paying $30/hr for machine time.You make $60/hr or more normally.You deliver it in 15 days and feeling generous give it to him because he has an old truck with a BASS sticker on it.He then goes and brags to his buddies how he raised hell and made you give it to him.By word of mouth one bad customer(or your mistake) can cost you 6 new customers.Via internet? 2,500 on this site.That is why I would not make molds for some.Maybe they won't either.
You really can't blame someone for being too busy.Unless you are a kid talking to a parent.
I have said this before,everyone is lucky to have Del and Bob making molds.They could easily be making alot more money elsewhere.
Sorry guys, but I'm not going to needlessly compete with Del or Bob.