Here is the response I posted to another person wondering if a CNC was right for them. With the family doubts, your own admitted motivation questions, the reality of resale value of equipment during a business purchase, depreciation, etc. I'm even more convinced that a person in your situation should long and hard before dedicating that much space, investment capital, learning curve, etc. to such a powerful and large investment.
"I'm not trying to scare you off buying one, just hoping you'll consider the following.
Our shop on average does a couple routed HDU
signs per month, several custom shape cut panels from a variety of materials, etc. and we still can't justify the purchase of one. Our next door neighbor is a custom woodworking shop with a 5'x10' AXYZ, 8 tool changer, multizone vacuum, 10hp cutter who gives us a reasonable wholesale rate and has all the above mentioned issues AND maintenance, bits, payments, insurance, etc. to worry about.
We only have a 2,500 square foot shop and at times it barely fits all we have going on. They do all of their own work on it, our work and the routing work of several other local businesses and there are times when it sits idle.
Do you already have the workload to justify its purchase and dedicated space to accommodate a machine that is:
A.) Big
B.) Loud
C.) Consumes lots of energy
D.) Throws a lot of dust and particulate into the air no matter how good of a vacuum system you purchase
E.) Requires a person capable of operating a complex and potentially dangerous tool that includes some degree of
computer knowledge along with being able to look at files and properly prep them for pathcutting.
F.) Has constant upkeep issues to deal with in order to preserve its value and functionality."