DVD/CD based printable spectroscope

Printing these designs requires supports. They are oriented so that the internal baffles are printed without requiring supports. Two small blocks were added to the retaining clips as support. These have 0.25mm offset to simplify their removal. 

This remix simplified the DVD Spectroscope design by durfil to use the front slit only, removing the mirror slot. The shape was also slightly rounded for a more comfortable handling. Two support blocks were added to the design for easier printing of the DVD retaining clip.