MakerBot launched its MakerBot Digitizer desktop 3D scanner earlier this year, selling for $1,400. Radiant Fabrication has an all-in-one 3D scanner and 3D printer. Fuel3D raised $300,000 on Kickstarter for its hand-held 3D scanner. And just this past week, 3D Systems launched a $399 hand-held 3D scanner called …