I don’t know what you guys are trying to run on your molders but based on the condition of some of the spindles in for repair, I think it might just be concrete. Broken shafts, seized bearings, “welded” tooling all can be prevented, and it starts with listening for signs.
A 3-axis CNC router can do more than just machine sheet stock for cabinets. Given the right software and tooling, other than a spiral cutting end mill, a 3-axis CNC router can generate more artistic items than cabinets.
When you stand back and think about it, a CNC machine of whatever variety is nothing more than another power tool that depends on a single or multiple electrical motors to operate, and electrical motors have parts that fail, usually at most inopportune time.
When conversations turn to digital fabrication, what seems to be left out is the computer.
For small- and medium-sized woodworking shops, the decision factors involved in purchasing a CNC router generally involve three distinct factors. First is the cost of the technology including hardware, software and training costs relative to the projected productivity gains.
Making a decent profit on a job is a skill based on years of experience and includes figuring how to get the most out of sheet goods and dimensional lumber.