The title says “Possible” because I successfully made a fan/book that met my requirements this week, but I think it is only a solution and not necessarily the solution. I have continued working with the basic format that I showed you last week.
If you want to make your own model, first print out tanabata 2019.
(Please note: the pdf is for 8.5 x 11″ paper. Pages one and two should print on A4 without any problems, however getting the placement for the page three image on the reverse side of page one will take some adjusting. Centering pages one and three may work, or you can try printing page one normally, then flipping page three upside down when you print it on the back.)
Page one is the cutting and scoring pattern for the fan body. I printed this on cardstock for the model, but after further testing I would suggest a heavy paper like 120 gsm/80# text. If you want a fan without any printed lines, print out page one on card stock and use it as a template.
The second page has the support panels and locking mechanism and should be printed on card stock. The third page has an image that you can print on the reverse side of page one if you want your fan/book to have a Tanabata theme. I have re-oriented the original image so that the brightest star on the left is Vega/Orihime and the brightest on the right is Altair/Hikoboshi.
The image is a heavily Photoshopped version of a NASA photo. Here’s the original photo taken by Andy Steere.
(NASA is a great source for astronomical images.)
Start with page one, and score all the dashed lines, then cut out along the solid lines. Cut out the four triangular support panels from page two and glue them to the fan body, making sure that the two with printed lines are placed as shown below. Make sure the lower edges match.
You may need to trim the support panels a bit at the outer ends to match the fan body. Pierce a hole at each end of the two interior solid lines, then cut two parallel slits between each pair of holes. Don’t try to cut through all the layers at once. Several shallow cuts will work better than one forceful one.
Score the larger half of the locking mechanism on page two along the dashed lines, then cut out both parts. Pierce holes and cut the interior solid lines as you did on the fan supports.
Fold the larger piece of the locking mechanism so that the printed lines are on the inside —two valley folds. Turn the part over and glue the second half in place with the straight edge sitting just next to but not over the fold on the larger part. Make sure that you don’t glue down the two tabs!
The underside should look like the picture below. To help with later assembly, put a slight bend in the middle of each tab.
Turn the locking mechanism over and trim off the protruding corners so that you have a smooth oval shape.
Attach the locking mechanism to the book by placing the centre fold against the bottom edge of the fan body. Insert the tabs through the long slot and through the upper slot on the front of the locking mechanism. Tuck the ends into the lower slots. If you wish, you can glue the right hand tab in place. Do not glue the left tab! The image below shows the lock in position on the folded fan.
The fan should be folded so that you have a mountain fold at either end when slit side of the locking mechanism is facing you.
To lock the fan open, undo the tab on the right (when the fan is positioned as shown above and below), and slide the lock to the right. Lock in place by pushing the tab forward through the small slot on the right, through the matching slot on the lock, and tucking into the remaining slot.
Your fan/book should now be easy to use for cooling purposes.
To undo the lock and return the fan to a closed position, lift gently on the curved edge of the lock next the right tab. The tab should slide gradually out of the lower slot. Pull the tab back through the small slots in the lock and fan, then slide the lock to the left. You can put the tab back through the long slot, but it isn’t really necessary.
To give you an idea of what the star image looks like on the fan, the picture below shows it laser printed on 120 gsm/80# text and folded.