Stapling Flips

Great idea!

I use a flat fold stapler
http://www.wizardcoinsupply.com/pro...lm-size.html

AKA flat clinch stapler, totally worth the $10 investment, if you are like me too lazy to flatten the staples of the regular staples.

I was using a small pair of needle nose pliers to flatten the staples. While browsing Staple's one day, I found a flat-cinch stapler that was inexspensive. I won't go back to pliers.

I staple to

I always use copper plated staples rather than plain steel ones.

I have even seen a gold coin suffer corrosion, albeit suffering many years of being buried in a steel tin, which rusted. That was enough reason for me to use copper plated staples. Besides, when steel staples corrode, they leave unsightly rust staining around them.

Gold under certain circumstances can corrode. The particular coin I am referring to is a 22 ct. gold Sydney Mint half sovereign of 1859. The coin was in otherwise EF condition.

Gold can form complex double salts, in association with other metals, e.g. telluride, which is a complex gold / tellurium gold double salt, known as calaverite. It is an important source of mined gold ore, in the Western Australian Kalgoorlie region.

I suspect that the corrosion on the aforementioned half sovereign must have been a complex double salt of gold and iron, with the corrosion proceeding in an acid environment.

I also use small pliers to flatten the staples and have been happy with the results.

I used to use staples on 2x2's but to many accidents, scratches, torn plastic, etc. The flatter you make them, the more difficult to remove them.
A roll of 3M clear tape will last a long, long time to seal the edges of any flip. No air can get in that way also.
Mentioned this before. Take a flip you stapled and put to your mouth and blow. If you can get your breath to go through, so does air.
May not be perfect but taping 3 sides really does keep out stuff.