Home › Blog › Buying Guide › What Do Buyers Look for Before Investing in a Pre-Owned, Used, Secondhand, Surplus CNC Equipment Before Purchase Okuma MC-400H CNC Horizontal Machining Center made in Japan When evaluating a pre-owned / used / surplus Okuma MC-400H (horizontal machining center)—or similar Okuma horizontal CNCs—for purchase, here is a structured checklist of what experienced buyers look for, with common failure modes, red flags, and decision criteria....