https://www.hamiltonmillworks.com/post/is-bringing-cnc-machining-in-house-worth-the-capital-expense-for-small-batch-production 2026-06-08 https://static.wixstatic.com/media/0e412e_f89a694df30c457ea4932cc818716f14~mv2.jpg CNC milling machine drilling a metal block, coolant spraying in a bright industrial workshop.