1 Get a firsthand user review.
Visit an existing user and get a firsthand account of the machine.

2 See it complete a job from start to finish.
This is the best way to understand how the machine works.

3 Plan for the adoption process.
Make sure you have someone who is trained to operate the machinery and is able to complete a job.

4 Access to support.
Support has to be part of the package after buying the machine. 

5 What about spare parts?
Before spending any amount of money, know how much spare parts will cost: it’s almost guaranteed that something, ultimately, can break down on complex mechanical systems like CNC routers.

Sources: Thermwood, 800-800-533-6901, thermwood.com, and C.R. Onsrud, 800-638-8185, cronsrud.com.