How do you maintain flow when one station inside the cell has to run in batches? You built a cell that mostly flows one piece at a time. Then you hit the oven. Or the washer. Or the plating tank. Or the test chamber. One station physically demands a batch of 10, 20, or 80 parts at a time. Parts pile up before it. Downstream starves during the cycle. Then everything dumps out at once when the batch finishes. Your flow line breaks in the middle. Most lean books say to eliminate batching. But you cannot eliminate a heat treat oven, washer, plating tank, or test chamber your process depends on. You have to design the flow around it. This book shows you how. Batch Processing Inside a Cell is a practical implementation guide for protecting flow everywhere else while the batch processor does its job. Inside this book, you'll learn how to: • Preserve flow around the one station that must batch • Separate process batch from transfer batch • Size input and output buffers, transfer batches, and timed release cycles • Use the Flow Damage Score to measure the impact of batching • Choose between four strategy combinations: The HMLV Standard, The Fixed-Batch Fix, The Full Stack, and The Capital Play • Apply four layout patterns for positioning the batch processor inside the cell • Use six layers of standard work to make the fix repeatable • Apply SOPs, scorecards, templates, and a missed-cycle playbook • Follow a complete 60-day implementation roadmap • Study a worked case showing lead time cut from 8 hours to 2.5 hours at zero capital The goal is simple: a batch processor that no longer destroys your flow. Who This Book Is For This book is for HMLV manufacturers, CI leaders, plant managers, operations leaders, and manufacturing engineers who already have a cell that mostly flows — except for one station that batches. This Book Is NOT the Starting Point If you do not have a single-piece-flow cell yet, start with the earlier books in the Lean Line Pro system first. If multiple cells are fighting for access to one shared machine, start with Volume 7, Manage Shared Equipment. That is an access problem. This book solves the flow break inside one cell caused by one batch-processing station. Where This Book Fits in the Lean Line Pro System The Lean Line Pro Deep Dive Series is a step-by-step implementation system for building real lean flow in high-mix, low-volume manufacturing. Each volume is designed around one bite-sized continuous improvement project — one practical system your team can understand, implement, measure, and improve before moving to the next step. If you are new to the series, start with Volume 1 and work through Volume 6 in order. The 6 Core Steps to Lean Flow in High-Mix Manufacturing Vol. 1 — Define Product Families ↓ Vol. 2 — Reduce Setup Times ↓ Vol. 3 — Build Flexible Cells ↓ Vol. 4 — Level the Schedule ↓ Vol. 5 — Install Pull Systems ↓ Vol. 6 — Standardize the Work Special Situation Guides Vol. 7 — Manage Shared Equipment Use this when shared machines, ovens, washers, paint booths, test chambers, or other monument processes disrupt flow across multiple cells. Vol. 8 — Batch Processing Inside a Cell Use this when one station inside an otherwise flowing cell must run in batches. Written by a Practitioner Based on 20+ years on real shop floors. No buzzwords. No academic fluff. Just the formulas, templates, standard work, and implementation logic you need to make the system run. Stop watching your flow line break at the oven. Design the flow around it and get your lead time back.