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Triangles, The Unit Circle and Radians

The Unit Circle andRadian Measurement of Angles

This is the last of the basic math posts for awhile. The next posts will be about creating a flotation platform that can be used as a raft or floating dock. We will be using much of this math. This one is based around a video like

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A Right Triangle and an Introduction to Trigonometry

Basic Trig Formulas

I have just created another video about some basic math. This one is about what is probably the most useful branch of mathematics for practical work, trigonometry. I am not going to bore you here with a repeat of what is in the video, but what I will do here is

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A Right Triangle and the Pythagorean Theorem

A Generalized Right Triangle

Tonight’s post is another one on the subject of simple but very very useful mathematics and geometry. The right triangle can seen almost everywhere in the man-made world. Almost everything is build with straight lines usually running horizontally and vertically. Together those would from rectangles, but a rectangle is inherently

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A most useful tool and some announcements.

Measuring a coil diameter

Tonight’s Post is in some ways almost an embarrassment to admit. I have finally purchased a digital calliper and have found it to be one of the most useful tools I have ever purchased. Before going into details about that I have a few announcements to make about this website

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Thevenin and Norton equivalent sources.

Thevenin equivalent source.

Now that we have talked a little about ideal sources it is time to get real. Yeah, I really do mean that. We are going to talk a little about real sources and modelling those. The first one I am going to talk about is the Thevenin model shown in the

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Design, Models, and Simulations

Design, if you are lucky, is based upon some calculations developed from a model of the thing you are attempting to design and construct. Often, as we have seen with the sheet metal brake project you are not lucky and we are left “flying by the seat of our pants.” Other times we know the

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More Testing Work on the Homemade Box and Pan Brake

Gap between the hinged board at 90 degrees and the base board with no metal.

Another step forward with the brake project. I cannot say the light at the end of the tunnel is very bright yet, but I am pretty sure it is not a train. I am a whole lot more hopeful

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Debugging the Homemade Box and Pan Brake.

The stiffening bar on the back f the hinged piece

In the last Post “Test 2 of The Box and Pan Brake – Making Progress” I said I was making progress. I am beginning to feel right now I am not although I think I am. Most blogs and D.I.Y. articles do not post

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The Second Baby-Step with the Box and Pan Brake.

The clamp board with the steel edge

Remember, the reason babies are made close to the ground is so when they fall they don’t have very far to fall. Well, I am no baby, but I can avoid wasting a lot of time, money, and effort by moving forward in small steps and testing

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Making a hinge mortising fixture.

Router Guide Bushing

In computer programming there is a term called “stuck in an endless loop”. Usually programs do the same thing over and over using different numbers and if you somehow forget to tell the program how to stop executing the loop it just continuously keeps doing the loop forever. Sometimes us humans

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