I was using the 3M heavy duty adhesive spray, but my last show
was very humid and some of the thinner papers began rippling from
it....I am considering plain old rubber cement.
I’d suspect your problem is the paper. Usually paper expands when
it pick s up moisture. What’s probably happening is this.
Your mat board & other paper products used to mount the items,
were store d in a dry location (at least drier than the 80+%
humidity you can experien ce in a typical Midwest summer. You
assembled the dry components & then took them into a location where
the humidity was considerably higher. The pape r started to absorb
the humidity & expand. However, because the adhesive us ed is more
impervious to moisture absorbtion, the bottom most layers of pape
r aren’t able to absorb moisture at the same rate as the top
layer(s). The result is the wrinkling you described.
Two possible solutions; 1, move to AZ, where the humidity stays
low. Tha t may not be practical so here’s #2. Acclimate the papers
you’re going to u se in an atmosphere that is close to the humidity
they may be subjected to i n the near future. Put the paper in a
garbage bag with a pie/cake tin partially filled with hot water.
Close the bag tightly. Assemble them aft er they’ve been
acclimated. Your idea for using plain old rubber cemet is vaild, it
takes a long time to become ridgid & its’ elasticity may be enough
to allow the top layers of paper to expand without wrinkling as
bad. You might also spray the assembled paper items with a clear
sealer if you can tolerate the slight change in color & finish. An
artist supply store might have what you’re looking for.
Dave (in dry AZ)