HOW TO MAKE A PERPETUAL CALENDAR
Base:made of cardboard
Guide:Paste 2 parts of cardboard to the positions shown.
Cover:made of cardboard
Open a big window and 24 small windows.
Paste this cover on top of the guides of the base.
Sliding belt:made of cardboard
It is preferable to make the base and the cover wider by increase the left and right margins for better appearance.
TOP OF SITE