Scroll down to review all of the different sections of the Lean Design Studio platform.

The STREAM Program

Building products the right way, and getting good at that through repetition, is the pathway to building a Lean culture in a manufacturing company. How do we know what is the “right way”? We look to the best examples of excellence that we have: to companies that are achieving high productivity, high quality, high profitability, as well as an engaged and enthusiastic workforce.

These manufacturing companies typically apply what is called Flow Manufacturing. Taiichi Ohno, founder of the Toyota Production System, stated that the goal was to create a “River System” connecting all processes. This river, or flow, between processes is arguably the most important element of Lean Manufacturing.

The STREAM program walks you through the step-by-step method for implementing flow, not in a classroom but through an actual implementation project for a target area of your plant. The key to the STREAM Program is that you will get trained while you implement. By the end of this program, you’ll not only end up with a high-performing line, but you’ll be able to take the habits that you have built during the project and apply them to other areas of your company.

And that’s how you build a Lean Culture.

What Does "STREAM" Mean?

We have organized the STREAM Line Design Program into six stages. Participants in the STREAM Program have complete access to the entire methodology, as well as all of the tools, downloads, and worksheets necessary to design their own optimized production line.


Perform the preliminary planning and data collection steps that provide the foundation for a solid Process Design.


Perform data analysis and calculations to transform the current workflow into one where all processes are connected in a continuous flow.


Apply balancing tools to optimize work flow performance. Then ensure that design will meet performance goals with simulation modeling.


Create a CAD-based layout, including layers for facilities changes, material delivery and presentation. Use actual floor plan and dimensions.


The implementation phase where the design will be physically built, participants will be trained, and the line will begin working.


Engage the entire workforce in making improvements to their area, and empower supervisors and team leaders to lead the Kaizen effort.

What is Included in the STREAM Program?

We’ve made it easy for participants to track their progress as they work through the STREAM Program. Managers have the added ability to monitor the progress of their team by viewing each team member’s roadmap and course completion status, exam scores, and uploaded assignments.

Implementation Roadmap

Follow the 5Ls that are needed to design a flow line. The result of our step-by-step methodology is a world-class Lean production line.

Certification Track

Online courses and certification in Mixed Model Line Design and Mixed Model Material Flow. Master the key principles to designing a flow line.

Simulation Software

Easy-to-use simulation modeling software designed specifically for Lean professionals and process design.

Advanced Topics

Access our library of advanced Lean training materials including exercises, simulation tips, and mini-courses.

Certification Tracks

Our online courses were originally designed for a Fortune 100 client. They have been thoroughly reviewed to include the necessary in-depth information that you will need in order to design world-class production lines and material delivery systems. Each course will walk you through the complete series of steps, from research and data gathering, all the way through to deployment.

Mixed Model Line Design Certification

Mixed Model Line Design is the step-by-step methodology for designing high-mix production lines or value streams. The result is a production line that can manufacture a large number of different products and options, with high efficiency and quality.

The tools of Mixed Model Line Design allow the design of lines that can handle inevitable changes in mix and volume, without degrading throughput or productivity. And they avoid the need for batching models, and for extensive and costly line changeovers.

How do you know if the line is performing as expected? Is that slow down normal? Getting educated in Mixed Model line design will enable you to “read” the line so you know how it is performing.

Mixing products has a host of advantages including better lead times, increased flexibility, more efficient use of floor space, and leveled product volumes.

A Process Flow Diagram shows the relationship between your processes and the flow (or sequence) necessary to make one unit of a specific product.

One Process Flow Diagram does not provide enough information to make well-informed decisions on the whole line, so you must find a way to extract applicable information.

Takt Time is the line’s formulated production rate. This rate is calculated and is an important design parameter for the line.

In this lesson we’ll cover some of the difficulties you must overcome to calculate an accurate Takt Time, including how to account for many factors that influence Takt such as changes in Effective Minutes, Rework, Scrap, Options, and Quantity consumed.

Standard work is a foundational element of Lean. In this lesson, we will discuss the benefits of Standard work, how to use Standard Work, and why it is important to use graphics in your Standard Work definitions.

Understand how to use the Resource Calculation Formula, and learn how to interpret and apply the results of your Resource Calculations.

In this lesson, you will learn how to calculate the necessary number of workstations on your line and how to determine the distribution of work between those workstations.

In-Process Kanbans (IPKs) are a necessary component of many mixed model production lines. In this lesson we will introduce the benefits and application of IPKs, as well as the best methods for calculating the optimum number of IPKs between your workstations.

Learn about the six line balancing tools, how to use them, when to use them, and the incredible benefits that come with a well balanced line.

Every line designer has to consider how machine processes will impact his or her line. In this lesson, you will learn about the different types of machines, their strengths and weaknesses, and how to integrate machines with IPKs and the balancing tools.

Every mixed model production line has to deal with changeovers, but you don’t have to allow those changeovers ruin your design. This lesson is all about strategies to minimize, as much as possible, the negative impact of changeovers on your line design.

Before jumping straight into CAD, it is important to first create a conceptual design. In this lesson you will learn why conceptual designs are useful, how to create them, and which inputs go into a conceptual line design.

When is Simulation Modeling necessary? What data goes into a successful model? How do you get that data? And, when the model is completed, how do you analyze those results?

This lesson teaches you the steps that go into creating your Final Layout, as well as the departments that should be involved.

Once you CAD drawing is complete, how do you take that drawing and turn it into a live production line?

Mixed Model Material Management Certification

By the end of this course, you will understand how to design a material delivery system that supports the management of a large number of different products, options, and items, with high efficiency and quality. We would go so far as to claim that your material delivery system, following our methodology, will essentially shortage-proof your production lines.

The tools of Mixed Model Material Flow can handle inevitable changes in mix and volume, without delaying or stopping the line. And they can do so efficiently, without overstaffing or wasteful material delivery activity.

Develop a deep understanding of the optimum material delivery workflow and strategy.

The surprising source of modern material flow systems.

Every individual item that will be managed, both purchased and manufactured, will be documented in detail in the PFEP database.

Your job as the designer of a material delivery system is to know which tool to use. Kanban is a general term that refers to a variety of different pull signals, which will be examined one-by-one.

Kanban means “signal”, and the supermarket strategy for managing inventory and overcoming imbalances is an essential element of a Lean material management strategy.

Kanban is not the only signaling method that will be used, and this lesson reviews to options available to a Material Flow designer.

One of the goals of Lean Material Flow is to balance material coverage (no shortages) with high inventory turns. In this lesson you will calculate optimum inventory levels for a variety of different items.

Material presentation is an integral part of optimum workstation design. In this lesson you will review basic objectives and examples, as well as look at some provocative new ways to deliver and present materials to an operator.

Material presentation is an integral part of optimum workstation design. In this lesson you will review basic objectives and examples, as well as look at some provocative new ways to deliver and present materials to an operator.

Material presentation is an integral part of optimum workstation design. In this lesson you will review basic objectives and examples, as well as look at some provocative new ways to deliver and present materials to an operator.

You will choose from a variety of Material Conveyance methods, from hand delivery to Automated Guidance Vehicles (AGVs).

The philosophy of “frequent trips and light loads” will be accomplished through the design of your delivery routes. The establishment of Standard Work for material delivery is also applied in this step.

The Lean Material Flow strategy puts a strong emphasis on container standardization. The integration of containerization strategies with internal Kanban systems and outside supplies will be understood.

Material Flow designers use a “roadmap” or checklist, for consistency and completeness. In this lesson you will learn the 10 Key Design Principles.

A Lean Material Flow system will continue to use computer systems for planning and inventory control, and high inventory accuracy is a must.

The material delivery system needs continuous vigilance and management. In this important lesson we will review the methods and practices needed to ensure that your system is on a path of continual improvement.

Simulation Software

The Lean Design Simulator was custom-built for our Lean Industrial Engineering methodology, and has been used for years in our private practice on implementation projects for some of the biggest names in industry. It is easy to learn and even easier to use. In fact, all you have to do is fill out an Excel spreadsheet and the Lean Design Simulator does the rest of the work for you!

Test for Variability

Eliminate bottlenecks, test for variability, implement sequence rules, and achieve your production goals before you bring your line live.

Eliminate Bottlenecks

Analyze each resource down to the workstation level for utilization, time spent blocked or waiting, and idle time. Learn how to identify bottlenecks, and how to fix them.

Achieve Design Goals

You don't want to have to fix your design after it is already implemented. Test it first in a low-cost environment, and reduce or eliminate the need for post-implementation Kaizen.

Short Learning Curve

Most simulation software requires a hefty investment of your time to get up to speed. You can be building sophisticated models using the Lean Design Simulator within a few hours.

Use for Kaizen Events

The time required to build a model is short, so you can even incorporate the use of simulation modeling into your Kaizen events, and analyze suggested process changes real-time.

Automated Sequencing

The Lean Design Simulator now includes an automated sequencing tool that really speeds up the creation of sequencing scenarios. Push one button and an entire sequencing plan will be generated!

Who We Are

Leonardo Group Americas was founded by Richard Rahn and Gerard Leone, industry vets with 25+ years of experience. They are the authors of eight books on Lean subjects, including The Complete Guide to Mixed Model Line Design. Since 2011 they have partnered with Toyota Material Handling to present workshops on the subjects of Mixed Model Line Design and Mixed Model Material Management to thousands of Industrial Engineers and Lean Professionals.

The Lean Design Studio is the culmination of the tools and the methodologies that these two experts have developed over their two decades in the industry. The Lean Design Studio combines online versions of our core training courses with a newly developed simulation tool, designed specifically for Mixed Model Manufacturing applications.