Phoenix boy wows Pres. Obama with marshmallow gun - CBS 5 - KPHO

Phoenix boy wows Pres. Obama with marshmallow cannon

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Courtesy: makerfaire.com Courtesy: makerfaire.com
Courtesy: The White House Courtesy: The White House
WASHINGTON (CBS5) -

A 14-year-old Phoenix boy who engineered an extreme marshmallow cannon impressed President Barack Obama with his invention Tuesday at the second White House Science Fair.

Joey Hudy and Obama helped each other pump the cannon to get it ready to launch inside the White House. Hudy shot the marshmallow across the State Dining Room without causing any harm.

CBS 5 profiled Hudy and his invention in a Pay It Forward story last August.

"It came out pretty fast," Obama said. "It was safe."

"You're going to invent all kinds of impressive things," Obama told Hudy.

The cannon uses compressed air. According to Hudy's website, air is pumped into the PVC by a bike pump. An electronic sprinkler valve releases the air. It shoots marshmallows 176 feet.

Before leaving the boy's booth, Obama took Hudy's card. "I'm going to take a card, just in case," he said.

The fair celebrated the ingenuity of more than 100 students from 45 states, representing more than 40 different competitions and organizations that work with students and inspire them to excel in National Science, Technology, Engineering and Math (STEM) competitions.

Hudy, who battles Asperger's syndrome, said he wants to be an engineer someday.

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