A good craft for our office. It is about a perpetual calendar, of those that we change the day.
There are 2 models of simple perpetual calendars that we can build:
- With cubes or wooden dice
- With 3 rings of different diameters.
Perpetual calendar with wooden cubes
It is clear that we only need wood, the cutting tools, a little glue and paint. But here we see an exploded view with the amount of blocks we need.
Two cubes, for the days, a support to hold everything and three bars for the months.
It's very simple, but if you don't want to think about anything, here are the measurements. We work with 2 cm thick wood.
- the rear 10,5 cm long and 9 high
- the bottom 10,5 cm by 5
- 2 pieces of 7 by 9
- 2 cubes of 5 cm side
- 3 pieces of 10 and a section of 2 cm
When it comes to numbering and writing the months ... The months are very simple, 3 bars with 4 sides each make 12 months. So
- the first will take January, February, March and April
- the second May, June, July and August
- the third September, October, November and December
The numbers is a bit more complicated, if you like riddles, try to guess which numbers you would put on each of the faces of the dice to be able to make the combinations of the 31 days of a month.
If there are more number combinations are welcome :)
you are one of those who like not to get too hot your head point ...
- the first die will carry 0,1,2,3,5,6
- the second given 0,1,2,4,7,8.
With this you can make all the necessary combinations. Notice that we do not have the nine, so we will use the 6 turning it over.
I have adapted the measurements of the pieces because those of the source do not fit.
Scrap Book Crazy font
Calendar with concentric rings
It is a model that I have seen in a etsy shop. Doing it is not very complicated, and if we want we can use other simpler materials than wood. From cardboard or painted cardboard to 3D printed
These images give us an idea of how we should build it. I do not leave measurements, but if there is someone interested I can do some calculations.
The inner ring must be divided into 7 parts, the middle ring in 12 and the outer ring in 31
Do you know of any other type of perpetual calendar?