For this, my final, blog, I will be discussing
materials I would use to make the sculpture I showed you in my last blog should
I construct it, as well as how the entire mechanism of the sculpture will work
for the spiral to turn and the shell to open and close on its own
simultaneously.
The mechanism will be housed in the base of the
sculpture which will be constructed out of wood. It will mainly be a plain
wooden box, except for a 20cm diameter turntable in the centre. The turntable
will have three small wheels attached to the bottom to help it turn. Attached
to the underside of the turntable will be a simple model train set’s motor. This
motor will turn the overhead turntable slowly as well as the coil on top of
that.
The coil will be made out of copper as it is an
easily pliable material and is still very sturdy, even after being bent in such
a way. The plates at the top and bottom will also be made out of copper and
they will be soldered onto the coil.
The seashell will be made out of clay and the top
and bottom will be held together by a using a small hinge. To have the mermaid
bend and fit inside the shell when it’s closed, I will draw it on paper in two
pieces. The tail and the body will be drawn onto two separate pieces of paper
and then attached onto two small pieces of plywood cut out in the same shape as
the mermaid. They will be held together again using a small hinge and will be
placed at an angle so that both the top and bottom can be seen. At the back of
the vertical piece of wood will be another piece of wood attached to it which
will hold it to the inside of the shell, this will help to push the mermaid
down as the shell closes and pull it as the shell opens.
Now on to, perhaps, the most important part of the
sculpture and the main part of the mechanism. How the shell will open and
close. The rod will be glued to the inside of the shell and go through the
bottom of the shell, the top plate, the bottom plate and the turntable through
a small drilled hole in each of them. Inside the base the rod will go down
straight to the bottom, where a wheel will be attached to help the rod move
smoothly in a circle inside the base. Along the moving perimeter of the rod
will be a small slope made out of wood. The rod will move along the bottom
climbing up the slope and pushing the shell upwards as it moves.
So that is my final concept and how it works, I hope
you like it. J