Map panel assembly methods?

[Jumbo]

Tiring of using post-it notes to join the map panels; anyone have a better way?
The reviews of removable tape that I have read suggest that the adhesive therein is no better than that of post-it notes.

 

[sswann]

After taping place under thin plexiglass.

 

[Honza]

Yes plexiglass is the trick. The adhesive won't have to be so strong if the plexiglass is holding the panels in place.

 

[goatleaf1]

I have 7 sets of monster panels and have found that they are sufficiently heavy that I can drop a plexiglass sheet onto them without having to tape them first. But yes, plexiglass is compulsory, not just to keep them in place but to flatten down any bowing.