Snapmaker Artisan CNC Suction Extras

This is a few extra things I have designed to compliment [this CNC Vacuum solution](https://www.thingiverse.com/thing:6037424) for the Snapmaker Artisan.

I wanted it to be semi permanent in the table, yet easy to install/remove the vacuum hose.

There are several parts, as seen in the photos:

* `snapmaker_CNC_vacuum_to_pipe_adaptor.stl` : This is the bit that goes from the end of the vacuum hose, to the original CNC suction on the CNC module. It just pushes in place when it needs to be used. Print it in the orientation of the STL (ie: threads winding up from the bed), and with a large brim. I suggest plenty of adhesion (I used "Elmer's Disappearing Purple Glue Stick" on the glass bed, it's amazing how well it sticks!)
* `through_desk_to_pipe_adaptor.stl` : This is screwed to the desk (with a hole cut in it), and the other end of the above pipe connected. A second one should be printed to connect the pipe from the underside of the table. (Note: I positioned