We've been manufacturing CNC machine parts and spare parts for over a decade. We understand that fast quoting, accurate pricing, and rapid customer response are the lifeblood of modern competitiveness.
From real pain to real solution
J Nac (Thailand) Co., Ltd. started as a contract manufacturer building CNC machine parts and spare components for automotive, electronics, and industrial machinery clients.
Every day we quote dozens of jobs — some calculated from STEP files, others from PDF drawings, often phoning suppliers for material prices. The process devoured hours, sometimes whole days. Worst of all: late quotes lost us deals.
So we built our own tool in 2026 and refined it into CNC Costify AI: factory experience combined with STEP geometry and AI-assisted drawing reading to reduce repeated entry and organize quotes. Processing time depends on the files and selected service.
We manufacture CNC parts for real clients, and build AI that helps the entire industry move faster.
End-to-end service from DFM (Design for Manufacturing) consulting, CAM programming, to production and QC inspection. Prototype runs and batch production both supported.
CNC Costify AI was born from real factory pain — designed to be usable even for non-tech staff, yet powered by senior-engineer-level calculation logic.
To make CNC parts and spare component manufacturing easier, faster, and more efficient — reducing quote time from hours to seconds so Thai manufacturers can compete on the world stage.
Numbers built from real CNC industry experience — not just theory
Every part inspected with standard measuring instruments
Engineers and CNC machinists with 15+ years average industry experience
AI models and material database updated continuously, listening to users monthly
Whether you're a CNC job shop, purchasing dept., or freelance machinery designer — we get you
Try 15 STEP files/month free — use them any day or all at once