The Lowspec spectrometer
The lowspec spectrometer is a device designed by Paul Gehrlach in HOlland. It is designed as a set of 3D printing designs to be printerd at home ( or commercially) 
for assembly at home. = 
IT comprises a collectin of up to 20+ plastic parts, mechanical parts ( screws, springs, micrometer, optics, gratings etc) which need to be assembled into a working whole. 
The resolution of the spectra obtained are limited only by the gratings used - the gratings suported are up to 30mm square and 6 to 9.5mm mm thick blazed gratings. 
with working resolutions tarting at about 600 for the 300 lines per mm grating. 

Building
I got quotes for the third party printng of the components


Commissioning


Operating

Results

Improvements
Motorising using Arduino
Calibrating using a reference lamp spectrum


References
Stargazers lounge thread: 
Paul Gehrlach intro:
Lowspec assembly guide
BASS software usage guide
Detection and Spectrometry of Faint Light
Other texts
UVEX spectrometer and calibration module
LHRes3