Grande Prémio de Invenções do Irão! E uma Impressora 3D em Promoção, na Soluções Electrónicas, Plasma com Bitolas, e façam-no em casa! E ainda, Plástico em Placa.

Já sabem como é, de todo o Mundo, se envolve Invenções, está aqui!

Eis o Grande Prémio de Invenções do Irão, para concorrerem, se quizerem, com algo que resolva algum Problema.

Lembrem-se, os Homens veem e vão, mas as Invenções ficam:

Iran Inventions Grand Prize
About the Grand Prize 

Home technology as an organizer in cooperation with the Ministry of Mining Industry and Trade and the Ministry of Communications and Information Technology launched its secretariat. In this way the organizations as sponsors to support the Technological Home. Technological Home on various steps can engage in partnership to enhance an advocate for innovation and entrepreneurship.

1. Understanding the policy- making organizations and technological for the moral and material support of the project 

2. Attract agencies and industrial centers across the world 

3. Signed agreements with industry and the real need to use the technology 

4. Sign in Iran’s Science and Technology reconciliation with the agencies and organizations around the world in order to interaction of the world novel technologies and focusing on the production and commercialization of technologies 

http://www.iigp.ir/En/AboutPrize.aspx

Este Site, Soluções Electrónicas, que eu desconhecia até ontem, permite-vos comprarem as vossas Impressoras 3D com toda a comodidade, e por isso, cá vai só um exemplo, uma Promoção, sim, está mais barata ;) ...

Uma Prusa por menos de 500 Euros:

BQ PRUSA I3 HEPHESTOS 

O kit completo é composto por 7 partes (kits internos), todas devidamente identificadas e com os respetivos componentes para facilitar ao utilizador tanto a compreensão da parte de montagem como a identificação dos componentes incluidos. Os kits internos são:

Ferramentas

Eletrónica

Extrusora

Eixo X

Eixo Y

Eixo Z

Bolsa material suplente

  

http://solucoeselectronicas.com/store/index.php?route=product/product&product_id=285

Não têem dinheiro para uma Crtadora de Plasma CNC? Mas têem uma Maçarico de Plasma?
Esta é uma das tais ideias de coçar a cabeça, e perguntat porque não pensámos nisto, USEM UMA BITOLA!
Pimba! 
Podem assim cortar na FabLab local o baratíssimo MDF, e com essa Bitola, cortar METAL, Muáháháhá! 
Vejam só este vídeo demonstrativo do método, duma série com muitos mais, e todos bons, deste grande Engenhocas DiResta:

DiResta MACHETE 

Diresta 

Watch me make a Machete using one of the many old crosscut saw i own. To shape the machete i use my new Baeumont Belt Grinder The Handle is made from ziricote wood from Belize. Please share and enjoy! ... the original upload was deleted by accident in my iphone app ! apparently there is not secondary warning!!!

https://www.youtube.com/watch?v=d3_KhntMjRk

 

Como não quero que vos falte NADA, pois então, cá está como fazerem o tal Maçarico de Corte de Plasma...

EM CASA, com Sucata que tenham por aí!

Instructable de Categoria.

E muitíssimo obrigado ao Bacano que fez este Instructable, Plasanator:

  

How to Make Your own Plasma Cutter....Plasanator 

Check out new video of the Plasanator on utube.com

http://youtu.be/enELHZ7dP2I

This Ebook is designed for Guys and Gals who like to create tools and machinery.

I hope my Ebook gives you hope that no matter how hard a project may seem, keep plugging away until you finish and you will succeed.

I spent 3 years putting this together and now finally all my hard work and research has paid off.

I studied diagrams from commercial venders, but to no luck. They tend to leave a lot out – on purpose - so it’s hard to reproduce their design. I’ve see different attempts at people making their own on You Tube and other sites, but what a death trap. Messy water resistors and wiring like a darn Christmas tree.

So I began reading books and articles on their workings and took my home schooled-knowledge of electronics to build my own plasma cutter. I was determined; failure was not an option.

I started by collecting parts from old microwaves, stoves, water heaters, air conditioners, car parts and more in the hopes of creating a low budget way to create a plasma cutter for myself. I mounted it all on a simple piece of scrap wood; well it’s scrap wood now. We, didn’t need that table anyway (shhhhhhh don’t tell the wife).

Then one day it all came together. I hit the power switch, placed the head to the metal, started the arc, felt the air kick and then a second hard kick (the current being drawn into play). Then BAM, it was slicing through quarter inch steel like a hot knife through butter.

http://www.instructables.com/id/How-to-Make-Your-own-Plasma-Cutter/

Podem apenas precisar de fazer Placas ou Blocos em Plástico Reciclado, para terem à mão quando precisarem, ou maquinarem como quizerem... 

Aqui está como fazerem Plástico à fartazana, sem mais, neste exemplo, um Bloco de todo o tamanho foi ao Torno, e já lá canta uma Terrina: 

Milk top bowl

matt.sims.37266

 

Hi

This insturctable will go through how I turn milk bottle tops (and various odd ones) into blanks for working with, mainly for turning but you can work it just like timber so your imagination is your limit :)

To start off with you need LOTS, just to be clear here LOTS of milk bottle/coke/fabricsoftner tops I get various places like cafes, staff canteens an family to save them for me just ask whoever you can.

A mold, this should be near the shape/size you want to use less caps, in my case im making a bowl so i used a bowl. If you want to be safe have one that you can melt into at 200 celsius because trying to melt it and move molds is unplesnt the lids retain loads of heat and stick to most surfaces so its just asking to cause serious burns.

An oven to melt it in. an expensive bit of kit but if you look hard in the kitchen (the place you take the lawnmower apart when it breaks before you manly shave the lawn) you might be as suprised as me that you already have one. (same applies to the mold the next cake my wife bakes will have plastic in it...)

And a work shop or tools to create! in this case a lathe was all i needed 

 

http://www.instructables.com/id/Milk-top-bowl/ 

Plasma CNC! E um Avião Telecomandado fácil de fazer, e reciclar Plástico, várias Máquinas!

Isto fará de qualquer Engenhocas um Fabricante!

Podem juntar-se uns 3 ou 4 Engenhocas, e assim comprar um Kit de Mesa de Plasma destes, e montar, partilhando o tempo de uso, e com o dinheiro que fizerem, comprar depois cada um a sua máquina...

Foto acima, e explicações, de como fazer uma Mesa CNC Plasma por menos de 5000 Dólares DAQUI:

CNC Router Parts Unveils Their New Plasma Table

Matt Stultz 

When you think of a CNC (Computer Numerically Controlled) machine, you probably think of a machine with a router attached to it, capable of cutting its way through wood, metal, and a variety of other materials.

Really, a CNC machine is a generic term for a family of fabrication devices. If you change the tool head, you can change the function and often the name. Add an extrusion head, and you have a 3D printer; a swiveling razor blade and you have a vinyl, paper, or cloth cutter; or add a plasma torch and you have a CNC plasma table capable of cutting through sheets of metal.

While we have seen numerous CNC routers and 3D printers come to market, very few DIY or kit plasma tables have found their way into Makers’ hands.

http://makezine.com/2015/06/04/cnc-router-parts-unveils-new-plasma-table/ 

E para os Aficionados do Aeromodelismo, podem agora fazer os vosso Modelos, com um Fio de Corte de Esferovite, ou Isopor, e pouco mais...

É bom!

Build Classic R/C Airplanes With New Method 

whiteboardwarriors2 

This Instructable will show how to build light-weight, electric versions of a couple of classic R/C airplanes quickly and cheaply using some simple methods. Other than a very simple hot wire foam cutter, which I will show, there are no special tools required. Using these techniques and materials, it should be cheap and quick enough that you can easily experiment with your own versions of your favorites and test many different designs with varying configurations of airfoils, wing dihedral, length, etc.

The impetus for this project was Das Ugly Stik, designed and built by Phil Kraft in the 1960's as a quick to build, semi-aerobatic plane to test his radios in (Here). It turned out to be one of the best flying, most popular R/C planes ever. My goal was to be able to test various air plane designs quickly and cheaply. A good example is the photo above which shows two essentially identical airplanes except that one is shoulder-wing and one is low-wing which were built to settle the debate about which was better for dog-fighting - high wing or low wing. 

http://www.instructables.com/id/Build-Classic-RC-Airplanes-With-New-Methods/ 

   

É fácil "cozinhar" plástico em òleo ou àgua, a 200 e  tal Graus, e fazer Placa de Plástico...

Mas eis um Engenhocas que viu um problema, a falta de reciclagem dos Plásticos, pois ele pôs Mãos à Obra, e tratou de fazer uma linha de máquinas para reciclar plástico, e está-se a dar bem com a Iniciativa!

Um exemplo a seguir, e sobretudo, um Site a visitar, pois ele explica como vós mesmos podem fazer exemplares estas máquinas todas! 

PRECIOUS PLASTIC

Plastic can easily be recycled. It needs relative low temperatures and pressures. Look around and you’ll notice plastic waste is everywhere around us. We just need to sort it and have tools to turn it into new things.

PRECIOUS PLASTIC – THE MACHINES

This project is a set of plastic machines, developed to set up a small scale plastic workshop. The machinery is based on general industrial techniques, but designed to build yourself. The machine is easy to use and made to work with recycled plastic. Whilst this entire project is still in development, the machines are shared open source online and improved by the community. 

http://www.preciousplastic.com/

Caixas! Feitas em Cartão, feitas por Corte Laser, etc. E a CNC Laser bacana, Mais, Juntas com corte CNC

Site magnífico: 

Já pensaram em fazer uma caixa de Cartão, com medidas exactas, só para aquilo que precisam?
Pois agora podem ir a este Site, e toca a encaixar, que ele gera os desenhos Online!
Mas não são só desenhos de Caixas, não...
Oferecem Geradores de, bem, de tudo um pouco, em Cartão ou Papel, desde caixas com tampa, a Molduras a Dossiers, Caixas-Almofada, Sacos de Compras, Caixas para baralhos de cartas, e até caixas em forma de Coração! 
18 Apps Geradores de Desenhos! 
Dá para fazer uma pequena Empresa, em casa...
Ver para crer:

Template maker

Need to wrap an odd-shaped gift? Create a box for it! Measure it up, choose a template and print it. This page is a resource for DIY artists, graphics designers and everyone who likes paper crafts (like me). It contains an ever growing number of templates for gift boxes and increasingly more other interesting things that can be made out of paper. What makes this site special is that the templates are all dynamic: you can customize almost all dimensions. All templates are free, no login is required.

This site was previously called "boxmaker" and was a subsite of http://www.ideogram.nl.

http://www.templatemaker.nl/ 

...Para começarem a fazer as tais caixas por encomenda, podem contar com esta pequena, garande maravilha.

Melhor que uma Cortadora CNC de Lâmina, porque como é de cabeça Laser, não só corta, mas também grava em Papel, Cartão, Madeira de 1mm de espessura, Balsa, Couro etc. E até grava Acrílico.

Como é muito simples e portátil, esta máquina pode ser uma benção em Escolas, Oficinas, etc.  

Podem começar com esta máquina e depois, comprar uma mais potente... 

Emblaser

The first affordable entry-level laser cutter for the everyday hobbyist and artist. 

The Emblaser is designed as an affordable entry-level laser cutter and engraver.

Ideally suited to the hobbyist, artist and professional who is looking for a laser machine which is simple to use and without all the complexities of a CO2 based system.

The 3 watts of laser power (1/10th the power of a standard CO2 system), is more than capable of working with materials such as paper, leather, woods and some plastics. It can even etch onto anodised metals. 

https://darklylabs.com/

Este Site, Makezine, é também de primeira Ordem.
Para hackers, Dicas fenomenais, como este sem-fim de Juntas e maneiras de fazerem as vossas caixas, articulações, sei lá que mais.
Com dicas tanto para corte CNC como Fresa CNC!

CNC Panel Joinery Notebook 

Sean Michael Ragan 

I’ve been collecting clever ways of slotting flat stock together since I first read Nomadic Furniture back in 1999, well before the advent of the accessible hobby-class CNC tools that, today, make manufacturing parts like these pretty easy. Now, the world is full of people designing models, project enclosures, sculpture, furniture, and all kinds of other cool stuff to be assembled from parts made on laser cutters and CNC routers, and I keep expecting a definitive book or website to emerge that covers the “bag of tricks” in an organized way. So far, I haven’t found it. I may have missed it. Or maybe this article can serve as a jumping-off point. In any case, I think it’s time to open up my file.  

http://makezine.com/2012/04/13/cnc-panel-joinery-notebook/ 

Descobri o artigo acima graças ao Hackalizer, por isso, cá vai o reconhecimento, e o Link, uma data de categorias de coisas Geek, neste Blogue:

The HackalizerYOUR SOURCE FOR DAILY HACKS 
http://hackalizer.com/ 

3D para Moldes, acabamento em Sugru, Lego para imprimir, e uma gravadora Lego NXT!

Fui o primeiro a constatar o óbvio que mais ninguém via, sou bom nisso, a Impressão 3D serve é para se fazer um Molde, do qual se farão N objectos, muito mais rápida e económicamente...

Pois cá vai Instructable a demonstrar isso mesmo! 

 ...E está cheio destas ilustrações bacanas!

3D Printed Molds Casting Tutorial: Complex Shapeshertzgamma 

Here is a very easy technique to cast complex shapes in 3D printed molds.

By complex shapes I mean shapes that are hollow, have channels or thin walls etc. Standard techniques usually involve making a negative shape of your object in sand or other material and then pouring the casting resin inside. This method is not something easy to do in a lab and it does not provide the possibility to easily cast shapes hollow from the inside. It also lacks repeatability and consistency in the final object.

It all starts with an idea - you want to make that minion figure from Despicable Me or a copy of someone's toe (why not haha).. Follow the instructable for a simple method to produce soft silicone casts out of 3D printed molds.

The process in 3 steps:

First we create the cast

Then, we mix two silicone compounds (usually or whatever you have) and pour them into the cast - gravity takes over and replaces the air in the mold with silicone

When the silicone cures we extract it from the cast and it's done!

Issues arise when we want to cast a complex object that has many surfaces or cavities. 

http://www.instructables.com/id/3D-Printed-Molds-Casting-Tutorial-Complex-Shapes/  

Interessantíssimo, eis uma técnica de acabamento dos vossos Objectos...

Em Subru!

Ou Oogoo, é claro. 

È também um pequeno Curso, de tão detalhada e organizada a Informação, 25 Passos, organizados em Capítulos.

É que é mesmo difícil não gostar deste Artigo: 

 

Skill Builder: Styrofoam Sculpting, Surfacing, and “Sugru Skinning”Jude Pullen 
The modeling technique I used in my Ergo Mouse project (MAKE Volume 38) has 3 main steps: sculpting, surfacing, and Sugru skinning. But you can apply it to any creative process requiring models to explore interactions and aesthetics, quickly and at low cost.

http://makezine.com/projects/make-38-cameras-and-av/foam-sculpting-surfacing-skinning/ 

 

Os nosso amigos da MyMiniFactory ofereçem-vos estas peças de Lego para imprimirem nas vossas Impressoras!

Ora aí está algo para agradar a Pequenos e Grandes Geeks, é só descarregar... 

Printable Lego Brick Starter Pack,brick 
This is the Printable Lego Brick starter pack! It in includes 11 different brix types that allow you to print, build and create your imagination.
Each brick prints support free and takes less than 15 minute per brick.
Create your master pieces and upload your pictures to the page! We can't wait to see what you have up your creative sleeves!
It is fully compatible with standard Lego bricks and can be used to enhance and create your old Lego sets!
 
https://myminifactory.com/object/myminifactory-brix-starter-pack-7356 

Falando de Lego, eis como podem fazer uma Gravadora Laser, com Lego NXT, e sem Solvdagem.

Ora isto é porreiro, porque aprendem a fazer uma Máquina CNC, e se, um dia, arranjarem um laser mais forte, do que este, tirado dum DVD...

Podem cortar Acrílico!

E suspeito que podem já cortar Cartão, assim... 

  

Lego NXT Laser Engraver

Baybren

 

After seeing a few laser engravers on Instructables and their intricate results I decided it would be worth building my own machine to make some wooden signs and artwork. I also decided I wanted it to be easy to build but still relatively effective at engraving images and that other people would be able to build as well. Thus my goal was to make it cost-effective and simple enough that anyone with some basic electronics knowledge and materials could build it without much difficulty. Initially I was going to use Arduino and almost all 3D-printed parts, but after having some printer issues I figured Legos would make things much simpler and easier to work with, and it's turned out fairly well. It's not industrial-grade and it has some issues of its own, but it's a great way to get started with using and building custom CNC tools, and doesn't require any knowledge of Arduino or soldering. 

 

http://www.instructables.com/id/Lego-NXT-Laser-Engraver/ 

...Mas, FAÇAM QUALQUER COISA, PÁ!

Não, não há mais desculpa para não fazerem o que vos der na cabeça, não quando é tão fácil quanto ISTO, 2 Molduras, material de Escritório, o forno e o Aspirador lá de casa...

E quererem fazer ALGO! 
Quanto aos Moldes, só precisam de um por ideia, e podem bem ir fazê-los à FabLab mais à mão... 

Make a good, cheap, upgradeable sheet plastic vacuum formerdrcrash Tired of buying cheap plastic crap? Now you can make your own!
Or you can make nice and surprisingly sturdy plastic stuff in amazing shapes, amaze your friends with your technical prowess, and be the life of the party.Vacuum forming is a technique for shaping sheet plastics into 3D shapes, which you can do at home, easily and cheaply. And it's fun. It's the easiest way to make an infinite variety of shapes in plastic, or to make molds for casting shapes in other materials, such as concrete.The basic technique is to0. clamp a sheet of plastic to a frame (such as a windowscreen-type aluminum frame)1. heat it in an oven (such as your kitchen oven) until it's soft and rubbery2. stretch it over a convex mold of an interesting shape (such as a life cast of your sweetie's face), and 3. suck the plastic inward onto that mold with a vacuum system (such as your household vacuum cleaner)Once the plastic cools, you pull it off the mold and trim off the excess plastic, leaving a copy of whatever shape you sucked the plastic onto.  http://www.instructables.com/id/Make-a-good%2c-cheap%2c-upgradeable-sheet-plastic-vacu/

Ou querem fazer uma Impressora 3D, super-barata, com Sucata? Pois cá está como é, passo-a-passo, com CDs e DVDs que encontrem por aí, e pouco mais:

 

Complete newbie step by step, 3D printer with all parts listsdintid  
Intro, prelude, or just: who is this meant for?I wanted the title to include cheap, but lets face it: it is not cheap to build a 3D printer unless you have some/most of the components on hand or if you find just shy of £100 as cheap to make a tiny, not very good quality printer. This tutorial is all about starting from zero, figuring out and understanding all parts of a 3D printer and keeping costs down for this our very first build.
The upside is that all the items can be reused for a larger better printer at a later stage. I did that, and it Works wonderfully - better than an Ultimaker original in fact (proud).
It should be obvious which one is made from old CD/DVD drives, and which one I reused my parts in later :) I opted for a small printer, but you can just ordre longer metal rods and get a larger cabinet, and you have a larger printer at the same cost.
I have not kept strict tabs on costs, but the final printer, which is awesome, amounted to a total of just over £200 or so.
In short, I'm going to build a 3D printer made from parts from old CD/DVD drives and some aluminium pieces. I am going to provide complete detailed description on every single part needed. There will be no requirments on having advanced or expensive tools nor expert knowledge on anything.

http://www.instructables.com/id/Complete-newbie-step-by-step-3D-printer-with-all-p/  

 

...E se não, esta Fresa CNC resolve-vos o problema, lá está, mais um Projecto que só não faz, quem não quizer:

How to Make a Three Axis CNC Machine (Cheaply and Easily)oomlout 
The idea behind this Instructable was to fulfill my desire for a desktop sized CNC machine. While it would have been nice to purchase an off the shelf unit the issue of price as well as size proved prohibitive. With this in mind I endeavored to design and build a three axis CNC machine with the following factors in mind:
-Use Simple tools (needs only a drill press, band saw, and hand tools)
-Low Cost (this kind of got away from me however with everything bought off the shelf the cost for all parts is under $600 (significant savings could be made by skillfully sourcing some pieces))
-Small footprint (30" x 25" footprint)
-Usable working envelope (10" X-axis, 14" Y-Axis, 4" Z-Axis)
-Relativly fast cut rate (60" per minute)
-Small part count (fewer than 30 unique parts)
-Easy to source parts (all parts available from 4 sources (Home Depot + 3 online sources)
-Ability to cut ply-wood (Succesful)

http://www.instructables.com/id/How-to-Make-a-Three-Axis-CNC-Machine-Cheaply-and-/ 

 

As minhas Engenhocas

Estão à venda, são planos para as vossas Laser CNC, e apoiem o Inventor Português, construíndo estes Puzzles que funcionam, e são a alegria da Criançada de todas as Idades!

Da esquerda para a direita,  uma Pistola de Elásticos, uma Espingarda que dispara Nerfs, e uma Pistola de Ficção Científica, que é realmente um Ponteiro Laser!

Os três Planos, com Instrucções passo-a-passo, é claro. 

 

 

 

Edgar the Inventor

 

Edgar is a Portuguese inventor who won the Gold Medal in Geneva (2002) for his Triosk (Kiosk on wheels for the disabled) as well as several other awards and medals across Europe for his ideas. He has worked with computers since the Spectrum 48Ks and been on the net since the 80s. He is the author of the book "Prototypes: To build a prototype without giving up" and the popuar site, "Build your stuff", in English, https://sites.google.com/site/buildyourstuff/ , and a Prototype building Blog, Faz você mesmo, in Portuguese, http://faz-voce-mesmo.blogspot.com.

 

http://cncking.com/digital-files/collaborations/laser-cutter/edgar-the-inventor.html 

 

 

 

 

 

 

Sobrevivência Urbana, mais vale prevenir que remediar!

Às vezes, uns minutos de Preparação vale para salvar vidas...

A começar pelas nossas! 

Já vos apresentei o Site Sobrevivência Urbana, do Dr. Abrahão, pois vai ter aqui um espaço para Posts, que são ao mesmo tempo Engenhosos e Engenhocas:

Somos uma empresa focada em segurança privada, consultoria e capacitação profissional.

http://www.sobrevivenciaurbana.com.br/

Eis uma notícia dessas, por exemplo:

Dentro em pouco, até nos vossos Cubículos de Escritório poderão ter um importante acréscimo de Segurança, nomeadamente, à prova de explosão!

Para já é proposto para as Forças Armadas, mas já se sabe, vai ser inevitávelmente transferido para uso civil...

Ballistic wallpaper to help protect soldiers seeking temporary shelter

David Szondy

It sounds like an old Goon Show joke, but soldiers may one day protect themselves from blasts by wallpapering temporary shelters. It may not be very decorative, but the new ballistic wallpaper under development by the US Army Corps of Engineers uses a special fiber inlay to help prevent walls from collapsing under blast effects.

If you wander the back alleys of British towns, you can still spot obscure windows dating back to the Second World War showing traces of sticky tape that the owners never bothered to strip off. During the German Blitz, Britons would crisscross their windows with ordinary tape to keep the glass from turning into flying daggers during bomber attacks. It was a simple fix that saved many thousands of lives and the principle is being revived to reinforce not windows, but whole walls.

 www.gizmag.com/us-army-ballistic-wallpaper/37658/ 

E já agora, apresento-vos o Livro sobre como sobreviver na selva que se torna este Mundo, e deixo os Publicadores falar por ele:

Não seja mais uma vítima
Autores: José Roberto Romeiro Abrahão e Ricardo Nakayama. Editora: Bueno Editora.Sinopse: 

A obra “Não seja mais uma vítima”, produzida pela Bueno Editora e escrita por Ricardo Nakayama e José Roberto Romeiro Abrahão, explica quais são os perigos da cultura do medo e como o cidadão pode enfrentar a violência urbana, a partir do método de defesa pessoal SOTAI. O sistema, criado pelos autores, ensina como os grupos minoritários (mulheres, crianças, idosos, deficientes e homossexuais), podem reverter uma situação de risco. A publicação além de abordar a parte teórica, traz também vários estudos de casos, leis e ilustrações. Com uma linguagem objetiva, isto é, de fácil entendimento, explora os dilemas da questão, entre eles, a banalização da violência. “Não seja mais uma vítima” tem a colaboração de diversas personalidades, como o jurista Ives Gandra, que prefaciou a obra, e os instrutores de defesa pessoal Robson Maciel, Marco César Scavone e Alexandre Chiavone de Araújo Cruz. Sobre os autores: José Romeiro Abrahão é advogado criminalista, jornalista, poliglota, instrutor de tiro, artista marcial, escritor de destaque no Brasil e exterior, e um dos defensores dos direitos das minorias, tendo se especializado em desenvolver ferramentas e técnicas voltadas à segurança, defesa e sobrevivência dessas pessoas. Já Ricardo Nakayama é matemático, artista marcial, graduado em diversas modalidades, instrutor de defesa pessoal. 

http://www.sobrevivenciaurbana.com.br/#!livros/c1z9q