## Tower of Hanoi
**Upcycling / Puzzle**
Last week I had completed the intermediate exam for the
of the Elements of AI course. I had the idea to implement the
[Tower of Hanoi](http://mathworld.wolfram.com/TowerofHanoi.html)
as an [upcycling](https://en.wikipedia.org/wiki/Upcycling)
project. This also reflects my current theoretical reflections on
the topic of [post-industrial design](http://designonline.org.au/post-industrial-design/)
and the role designers play in the context of our
environmental awareness. I also like to bring things
[from theory into reality](https://en.wikipedia.org/wiki/Haptic_perception), because I can learn much faster and understand
them better. Which doesn't mean I also like
In addition, I want to tackle small tasks in the future that are
not necessarily in my area of interest at the moment. This also teaches
me how to implement unusual concepts in design. If you only ever implement
ideas that have something to do with [Raspberry Pi](https://www.raspberrypi.org/) or
[Arduino](https://www.arduino.cc/), you will never
get out of this pool to discover new ideas and maybe even mix them. Now
the puzzle is not a new idea, but I had never seen anyone who had done it
with gears before. I found this exciting and wanted to see if it could
be implemented and what you can learn. When I was building the puzzle, I felt
like I had hundreds of new ideas.
Most of the material is tools or I removed from old printers.
There you really get a lot of gears in different sizes and also the
metal rack I have from it. One should furnish oneself in the cellar or
in the garage a corner with old materials. I have a cardboard for plastics,
metals and pcbs. Small coasts for engines, gears, propellers and
cables. You don't always have to throw it away immediately, because in
most cases you can use it again and again for your own prototypes or
projects. If you don't have an old printer, why don't you go to a scrap
dealer? This one will certainly be able to help you and that shouldn't
cost too much. But you can also buy all the new parts. That's up to your
+ Wood glue and brush
+ Drill inserts (wood)
+ Safety goggles
+ Sanding block
+ Sanding paper (100)
+ Wood plate
+ Fox's tail (Wood saw)
+ Masking tape
+ Primer Spray (white)
+ Spray color (thistle and orange)
+ Gears (from a old printer)
+ Nail polish remover
+ Old rag
+ Metal saw
+ Metal rod (from a old printer)
+ Metre Stick
Before we can do anything we have to clean the
gears of oil and grind even small quirks. This saves
us work later when we paint and regrind them. For the
rehabilitation I personally took nail polish remover,
but it would also have to be normal rinsing agent. It
would just have to be fat-dissolving. Please note that
rinse and nail polish remover are harmful to your body.
Only clean the components in a well-ventilated room. If
you have one, put on a respirator mask, which you can buy
in the paint shop. Don't save (like me in the video) on
your health. (The mask is already on my shopping list).
Before people ask me about it. The shirt is from the
German Death-/Blackmetal Band
After cleaning, we can start painting the gears.
From my previous projects I used a simple cardboard
box for spraying. You can only work with it in the fresh
air, but at the moment it has to be enough for me. At
the first test I put the components on small pieces of
wood. But that didn't work out so well, because they flew
away again and again. So I took two thin plastic rods and
put them through the walls of the box. This experiment
worked a little better, but it's not a good solution
We first paint with the white primer. Then we grind off
the coarse and unclean areas a little. Then spray two
to three layers of the orange paint. Ideally, we let the
paint dry for 24 hours, because fumes are still escaping
from the paint. But you can still sand and repaint after
half an hour if you are in a hurry.
The gears are already finished. Now we take care of
the plate in which the rods are put in. To do this, we
place the largest three gears side by side and measure them
roughly with a metre rule. I have not worked to an accuracy
of one millimetre now, because that is not always absolutely
necessary. This project was about the fun of creating and
assembling. Or maybe you have other sizes of gears, so I
won't give any exact lengths here.
I first measured the length of the wooden plate and
marked it with a ruler. But before I saw exactly, I
punched the board into the parallel vice and roughly
pre-sawn it. I don't have to work with a long board if I
want to clamp it with the screw clamps. When everything is
firmly clamped, you can saw much better and the edge
becomes tidier, so that you no longer have to sand so
After we have sawn off everything cleanly, we measure the
width with our metre rule and divide it by two. This is the
middle. We draw a line along the entire length of the board.
The three drill holes for the iron rods are then drilled on this.
As you can see, my brain was offline and I had to cut something
off at the end.
Now we saw the iron bar into three equally long pieces
with our metal saw. So that we do not cut ourselves at the
ends, we grind off the edges with a file. It's called
We should always do this when working with metal, because most
accidents can happen with sharp edges.](https://en.wikipedia.org/wiki/Burr_(edge))
Now fix the three iron bars with wood glue in the
wooden plate. To do this, insert one end of the bar
into the glue, let it drip off a little and push it into
the hole. We can fill small gaps in the bar with a toothpick.
When we have enough time we let it dry again 24 hours. so
the glue can dry out completely and everything should be as
firm as possible. We push our gears onto the rods and see if
Since some gears have a similar size, I marked them according
to the [Greek alphabet](https://www.rapidtables.com/math/symbols/greek_alphabet.html).
I took a small touch-up pen (unfortunately I only
had one in silver) and recorded the lower case letters one by one.
If you are not sure if the order is correct, you can check it out.
It's a little reminder. You can also use the normal alphabet or
numbers, I'll leave that decision to you.
Now we only have to paint the wooden board. To do this we
tape the poles with masking tape. As with the gears, we take the
primer first and then the right color. I chose Thistle because it
went well with the orange. Again, I don't want to interfere in your
creativity. Of course you can use completely different colours
or stick a paper collage on the wood or grind it with pens. I'm
sure you'll think of something. After that we are done and have built
our own Tower of Hanoi game. You can show it to your friends or
family. Maybe they can solve the mystery right now, because you
already know the solution, right?
Surprisingly, I had an incredible amount of fun with this
*project for children*. I think it was because I didn't
have to pay so much attention to measurements and rules this
time. I didn't sand the wooden board perfectly either, just the
way I wanted it. nothing more. Very exciting. As already mentioned
above, I will implement a simple project in the next few months.
Simply because I can do it and it gives me pleasure. But I have to
put weights on the plate again, because this little hill is already