Spectrograph / Spectroscope (LOWSPEC)

UPDATE: 26 February 2021
The guide lens holder has been replaced with a two-part system that is more reliable.
The assembly manual has been changed to reflect this (See step 21).
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UPDATE: 2 July 2020
Added f/8 collimator lens holder.
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UPDATE: 21 June 2020
The grating holder caps have a bit more thread. If you now screw them all the way in this will lock the grating holder in place buy compression/friction. It's a simple way to try to lock the grating holder into place and the screw back the micrometer screw a bit. Hopefully this will combat any shift due to expansion or contraction of the micrometer.
So don't tighten the cap if you change the position of the grating.

UPDATE: 26 May 2020
The lid has been updated so it can be printed face down without damaging the start of the threads for the grating. There's also a version without logo.
The turn table now has a small ridge