LOS ALAMITOS, Calif. (AP) - Seven-year-old Faith Lennox of Los Alamitos never thought she needed a left hand.

LOS ALAMITOS, Calif. (AP) Seven-year-old Faith Lennox of Los Alamitos never thought she needed a left hand.

After all, she couldn't remember losing hers to compartment syndrome when she was 9 months old.

But when it came to getting one custom made in a day by a 3-D printer, that was different.

Particularly when she got to pick the colors her favorite pink, blue and purple.

The blond-haired little girl declared it "really cool" as she watched it being printed out in plastic Monday at Build It Workspace, a 3-D printer studio.

She planned to try it on Tuesday.

Build It Workspace owner Mark Lengsfeld says such low-cost technology is revolutionizing prosthetics.

The hand will cost Faith's family only $50.

She'll wear it surfing and bike riding.