(EN) Hard Math in Lean: Selected Equations

Scientist on Blackboard

Scientist on BlackboardI am a scientist, and I try to understand how the world works, particularly in my field of manufacturing and lean production. (I also try to teach others about this, e.g., through this blog.) Hence, in this post I will look at different equations used in lean. Somehow, there are not that many…

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(EN) What Should Be Your Target OEE?

Smiley Frowney Percent

Smiley Frowney PercentIt is common in industry to measure the utilization or the closely related OEE. It is a bit more difficult, however, to set targets for these KPI. Often you hear people wanting or demanding an OEE as high as possible, with a long-term target of ideally 100%. That is often problematic. The utilization or OEE is unfortunately not a clear cut target that you can simply maximize. Let me explain…

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(EN) The Seven Types of Waste (Muda) – Now with 24 More Types of Waste Absolutely Free!

Seven Trash Cans Labeled

Seven Trash Cans Labeled

One popular and well-known concept of the Toyota Production System is the elimination of waste, in Japanese also called muda (無駄). It is one of the three evils of manufacturing systems, the others being unevenness (mura, 斑) and overburden (muri, 無理). In this post I would like to go through the details of waste with you. This includes the traditional seven types of waste – of which I am a big fan. For completeness sake I also included a lot more types of waste I have come across in industry. However, you have to decide yourself if these additional wastes are not themselves a waste.

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(EN) What the OEE is Good for … and What it’s Not

19th century knowledge carpentry and woodworking pattern b bandsaw
What is an OEE good for anyway?
What is an OEE good for anyway?

Measuring the Overall Equipment Effectiveness (OEE) is one thing, but before you measure the OEE you should know when and where you actually need the OEE to improve your industry. This post describes what the OEE is good for and what it’s not.

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(EN) Top Three Methods on how to Fudge Your OEE

19th century knowledge carpentry and woodworking pattern b bandsaw
How to fudge your OEE!
How to fudge your OEE!

The Overall Equipment Effectiveness (OEE) is by far and wide the most lied-about and fudged measurement on the shop floor, both intentionally or by accident. This post tells you the top three different ways how an OEE is fudged, so you know which OEE to trust and which one not.

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(EN) What is OEE? – Definition of OEE

19th century knowledge carpentry and woodworking pattern b bandsaw
What is an OEE?
What is an OEE?

OEE, the abbreviation for Overall Equipment Effectiveness (or sometimes Overall Equipment Efficiency), is a measure of the utilization of a machine. It is frequently used on the shop floor, often determines part of the performance-based compensation of the managers, and is by far and wide the most lied-about and fudged measurement on the shop floor.

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