Spectre with handle

I added a cylindrical handle to specter by ECh.
https://www.printables.com/model/520972

Enjoy math or physics.

If you're interested in refining the module, It would be swell to add an option for combing the tiles with a specified gap. This would help with printing many at a time. 

There already is an option to print multiple parts, but they are not as close as possible, and there is not an option to adjust the gap. But the code was well commented (at least the part untouched by myself). So there's a lot to go from.

Also, it would be neat to add options for the grid. Connected curves might be neat.