A Printable Microscope Focus Lock Upgrade

This is an upgrade to the printable microscope (77450) that allows the user to lock the focus. This is useful if you find the focus difficult to hold due to the weight of the optics tube or if you plan to use a smart phone adapter (coming soon). This upgrade is designed with a tapered nut that is installed from the inside of the head so that adhesives are not required to hold the assembly together. The nut is built separate from the head so that the thread can be reproduced with the best fidelity using fused filament fabrication.

The original microscope can be found here: http://www.thingiverse.com/thing:77450