Tag: graphic


Pritz Hatchet Planimeter

My first planimeter, very simple and very demonstrative to understand how a mechanical device can calculate area.

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How to create a building instruction

I have made a video in french to know how to create a building instruction. For English readers, you can follow the steps under :

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Lego Survey : The Results

Here are the results :

Many thanks for your participation ! It is very useful for me to know what you want and what you need. According to the result, I have decided to develop the digital PDF sale shop, then the printed building instructions. Despite the large amount of people who are interested in complete package, there are not enough for paying 125%-150% of the Lego price. Because this is the real price for crafted sets (depends on the price of Bricklink). Consequently, I have decided to NOT release this type of product at the moment.

Concerning the E-shop for buying building instruction, I am currently working on a E-shop which enables ALL builders to sell their PDF. The builders will be able to use the E-shop to put the instructions up for sale and receive incomes with an automatic retailing and a download section.

If you are a builder, and if you are interested in selling your PDF instructions, please contact me ! I am sure that you will be interested in my E-shop.

Erratum 07th may 2011 :

I have figure out all problems I have for the payment BUT I will not launch finally the service.
I explain you why : In fact I have always done my work in lego for free and now selling instruction embarrasses me. I think (finally) that selling thing from hobbys is not the correct way to develop it. Although the price is low, I consider that the most valuable thing I can do to develop and encourage the production of instruction is providing for free.
I don’t judge people who sell instructions, because this is their choices but for me I assume that it is not the right way to monetize our passion (I already receive incomes from youtube for my videos so the money is not the point for me). Concerning the amount of time to create an instruction, if I had launched the service, I would have spent lot of time to create instructions and not to create models.
So many thank for people who contact me to become a instruction sellers. I continue to give for free, it is more rewarding for me :)

As usual, stay tunned on my website to know the lasted news !


Integraph : Graphic Planimeter

An Integraph is an instrument used in mathematics for plotting the integral of a graphically defined function.

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