This is an easy project that you really can use any attractive paper to make. Or if you really like the nautical charts but can't get your hands on any I'm happy to sell you some!
Step 1: Materials and Equipment
- maps, charts, atlas pages, blueprints, placemats - anything large and attractive
- a sample envelope
- posterboard for a template
Step 2: Make a Template
Then trace that envelope onto the poster board.
Finally, just cut out the envelope pattern.
Now you have a somewhat rigid form to trace onto the back of the maps or charts.
Step 3: Trace and Cut Out the Blanks
Also note that the envelope will have a top and a bottom. With my pattern here the flattened point is the fold of the back side. Orienting the pattern the wrong way will result in any writing being upside down! I sure don't want that.
Trace the pattern onto the back side of the envelope. This makes folding it easier as well as leaves your lines hidden better when the envelope is sealed.
Then just cut out the pattern.
Step 4: Fold the Envelope
Step 5: Glue the Seams
I found it was good to put something heavy on the seams so they were not able to unfold before the glue dried.
Step 6: Now Go Write a Letter!
You will, of course, need to glue or tape the envelope shut in the same way you made the envelope. No licking the old maps - okay? Oooh... or how about using a wax seal?
Note that these envelopes probably should have a white address label on them so that your postal worker doesn't have to work too hard to figure out where your letter goes!