Combination of different techniques. The housing of this clock is made according to the design of mr. Paris. See the link below to his clock. http://www.instructables.com/id/The-Sprintronic-Clock-with-Laser-Cut-Case/ The construction ...
I have made just a few pictures because the construction is not that difficult.
Yhe hand of the seconds has 4 arms, so you can see it more often.
The groove for the window was made with a hole saw. ( see picture )
And the window is made from a plastic jar.
I made a simple battery holder because the battery is difficult to place in the clockwork.