Home › Blog › Buying Guide › Avoid Costly Mistakes: Professional Tips for Purchasing a Pre-Owned / Surplus / Second-Hand / used HARRISSON ALPHA 550 U CNC Lathe Here’s a professional, experience-based guide (checklist, pitfalls, and red flags) tailored to help you avoid costly mistakes when purchasing a pre-owned / surplus / second-hand Harrison / Alpha 550U (or similar “Alpha-550” family) CNC lathe....