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What Percentage Value Add to Expect for Manual Work?

Christoph Roser — Tue, 01 Feb 2022 11:00:09 +0000

In my last post I described a quick-and-dirty approach to estimate the percentage of value add (i.e., the efficiency) of manual work. While the value is only an estimate, it is a measurement that you can take quickly and easily even in passing for a manual workplace. You simply count when a person is adding ... Read more

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How to Estimate Value Add for Manual Work – How to See Waste!

Christoph Roser — Tue, 25 Jan 2022 11:00:20 +0000

One of the necessary tasks in becoming leaner and improving your industry is to eliminate waste. I like to use a simple approach for measuring waste in manual work to know how good (or bad) the current situation is. To explain my approach I commissioned a few animations. Let me proudly present my approach and ... Read more

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Karakuri Kaizen Examples

Christoph Roser — Tue, 24 Oct 2017 11:00:35 +0000

After an introduction and description of the fundamentals of karakuri kaizen, here are some different karakuri kaizen examples for a wide variety of uses. Most of them are from the 480 exhibits at the the Karakuri Kaizen Exhibition 2017 in Nagoya, Japan; others are from the 2017 OPEXCON in Stuttgart, Germany. Here is my attempt ... Read more

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Fundamentals of Karakuri Kaizen

Christoph Roser — Tue, 17 Oct 2017 11:00:23 +0000

Karakuri is the art of creating machines without an external power source. After an introduction to the topic in my last post, I would like to show you some fundamental techniques for karakuri. I would like to pay particular attention to power management: Where do these machines get their power from, how do they store ... Read more

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Introduction to Karakuri Kaizen

Christoph Roser — Tue, 10 Oct 2017 11:00:24 +0000

Recently I visited the Karakuri Kaizen Exhibition 2017 in Nagoya. This was a very impressive exhibit, and I learned a lot about karakuri from the many different examples shown there by over one hundred exhibitors. Organized annually by the Japan Institute of Plant Maintenance, it is to my knowledge the biggest showcase of karakuri in ... Read more

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All About Spaghetti Diagrams

Christoph Roser — Tue, 25 Aug 2015 11:00:31 +0000

A spaghetti diagram is a quick and easy way to track distances of parts and people on the shop floor. The name comes from the result looking like a plate of spaghetti. In this post I will explain the details and give some tips and tricks on how to make a good spaghetti diagram. Why ... Read more

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Muda, Mura, Muri: The Three Evils of Manufacturing

Christoph Roser — Tue, 21 Apr 2015 11:00:28 +0000

In its never-ending quest to improve its production, Toyota has identified the three evils of any manufacturing system: waste (muda), unevenness (mura), and overburden (muri). In this post I will explain the concepts behind these three banes of manufacturing. It All Started with a Good Fight(er) The terms muda, mura, and muri (waste, unevenness, and ... Read more

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More On Cuba’s Planned Economy: Cuban Industry

Christoph Roser — Tue, 14 Apr 2015 11:00:14 +0000

A few weeks ago I wrote an article on the Cuban economy, focusing on commerce (See How a Planned Economy Can Screw Up an Entire Country – Analogy between Cuba’s Communist Economy and Push Systems). On the same visit I not only saw supermarkets, but I also had a look at industry. Unfortunately there are ... Read more

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