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Case Studies, Typical Results, and Client Testimonials


The best starting point is to see a list of the widely different types of manufacturers we've worked with in the past 19 years.

In addition to the wide variety of industries, these also range from companies closing-in on $1 Billion in revenues, to a 3-man custom cabinet maker in Ohio (he was a 1-man shop when we started).

Just to make sure there's no misunderstanding: you can apply Theory of Constraints to an oil refinery, a pulp and paper mill, a pure job-shop or a silicon chip manufacturer. And no, it's not a "stretch" in any of these. Nor is it a "lip service" application.

In fact, the application to a pure job shop environment - where there are no part numbers (because they never do the same thing twice), no predefined routings (because they don't know the routing until they get the order, and even then they're guessing at process times if they take the time even to guess ) ... is one of TOC's strengths.

From the list of industries, you can link to some charts and graphs and tables that show real client results at different stages of implementation.

You'll see how productivity took a quantum jump from the day we "switched on" Theory of Constraints; how lead times shrank; how on-time delivery took an immediate upswing at "go live" then converged on close to 100%; and see the contrast between a company's growth pattern before TOC and after TOC. Before Theory of Constraints, sales growth was accompanied by a small increase in profits, and soaring inventories; after TOC, profit growth matched sales growth and inventories were halved. This growth performance is a real challenge for many businesses. We have the solution.

You can then link to read what some of our clients have said about us, in public and in private. Now, you'll not see anything bad - but we're NOT hiding anything! We can't think of a single past client, in almost 20 years, who COULD say anything bad about us. Clients, colleagues and new prospects tell us that the "word on the streets" is universally positive, which is nice confirmation.

Finally, there's a work in process; we're documenting case studies of how we helped different clients apply the Theory of Constraints in their own environments - the problems it was intended to solve, the challenges in implementation, the outcomes, and (in most cases) the lessons WE learned. (We never stop learning. In fact, the past 15 months have probably seen us through our steepest learning curve in a decade.)

The first one here is a beauty; it was our first, and the results were spectacular. There are a lot of lessons to learn from it.

There will be more case studies added each month – come back and visit.


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