STORY: Andrew Locke has been obsessed with building for most of his life. This is his latest project - a full scale pinball machine made up entirely of K'Nex pieces, a child's construction toy. He has been receiving these construction kits for Christmas since he was very young. (SOUNDBITE) (English) ANDREW LOCKE, ENGINEERING STUDENT AT UNIVERSITY OF COLORADO, BOULDER, SAYING: "Yeah I think I was about five. My brother and I received a set for Christmas, and he never used it, and I did. And I built stuff for it all the time, and the next year, I got a bigger set, and I used them every year. And I'd build bigger things, and anything that came into my mind, I'd try to build. So yeah, every birthday and Christmas, basically, it was more K'Nex, because my parents knew I'd use them. So they just kind of amassed over the years." For this Christmas, Lock wanted to put his K'Nex collection to good use. He spent four months building the pinball machine, which he estimates is comprised of 20,000 K'Nex parts, including the forty pieces that were from the original set he received sixteen years ago. Lock, now a 21-year-old engineering student, says one of the most important lessons he has learned while building bigger and more sophisticated objects over the years..... is the value of patience. (SOUNDBITE) (English) ANDREW LOCKE, SAYING: "Patience is definitely a big one, there are spots that just don't work, and you think it's going to work and you build it, and it doesn't, and you start throwing things, until it works. And so, I don't know that I've necessarily gained knowledge in engineering school that I applied here, it's more, I just have the patience." Patience...and now the time to enjoy the fruits of his labour over Christmas.

Dec 21 - A 21-year-old student has transformed tens of thousands of K'Nex pieces, a toy construction system, into a full-sized, working pinball machine. Andrew Locke says he was motivated by a love to build, the same obsession that has inspired him to pursue a career in engineering. Ben Gruber reports.

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1 of 3. Song Ho-Jun poses with his satellite during an interview with Reuters at his house in Seoul July 10, 2012.

SEOUL | Wed Jul 25, 2012 11:42pm EDT

SEOUL (Reuters) - Years of rummaging through back-alley electronics stores will pay off later this year for a South Korean artist when he fulfills his dream of launching a homemade, basement-built satellite into space.

"Making a satellite is no more difficult than making a cellphone," said Song Hojun, 34, who said he built the $500 OpenSat to show people they could achieve their dreams.

"I believe that not just a satellite, but anything can be made with the help of the Internet and social platforms. I chose a satellite to show that symbolically."

There's a long history of do-it-yourself satellites being launched by universities and scientific groups around the world, as well as amateur radio clubs, but Song said his is the first truly personal satellite designed and financed by an individual.

An engineering student at university, Song regularly incorporated technology into his art pieces. In a work called Apple he used light bulbs that would "ripen" -- change color from green to red when people take photos of it with flashes.

After working as an intern at a private satellite company, he came up with the idea for his "Open Satellite Initiative," which in turn led him to contact space professionals from Slovenia to Paris.

"I'm just an individual, not someone working for big universities, corporations or armies, so they open up to me and easily give out information," said Song.

The bespectacled Song spent nearly six years combing through academic papers, shopping online at sites that specialize in components that can be used for space projects, and rummaging through electronic stores hidden in the back alleys of Seoul.

He ran a small electronics business to support himself, but the bulk of his funds came from his parents.

The cubical OpenSat weighs 1 kg (2.2 lbs) and measures 10 cubic centimeters. It will transmit information about the working status of its battery, the temperature and rotation speed of the satellite's solar panel.

Radio operators will be able to communicate with the satellite. If all goes well, it will repeat a message in Morse code using its LED lights at a set time and location.

The components cost only 500,000 won ($440). But the cost for launching it hit 120 million won after Song signed a contract with NovaNano, a French technology company, which acted as a broker to arrange the launch, including submitting paperwork and finding a rocket.

The satellite will be launched from the Baikonur Cosmodrome in Kazakhstan in December with another satellite.

Song has been invited to talk at international universities and organizations including MIT Media Lab and CalArts, both in the United States, and the Royal College of Art in London.

"The reason why technology or science is talked about is not because it is an absolute truth, but rather because it generates interesting stories," he said. ($1 = 1146.9500 Korean won)

(Reporting by Eunhye Shin, editing by Elaine Lies and Patricia Reaney)

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