> coating them with a common substance Covering stamps in clear glue so that your correspondent could remove the cancelling stamp when steaming them off the en

> coating them with a common substance Covering stamps in clear glue so that your correspondent could remove the cancelling stamp when steaming them off the envelope for eventual re-use was something that was commonly discussed during the heyday of the zine scene in the 1990s. Now postage has become so obscenely expensive again for anything beyond a letter that maybe I should get back into the glueing trade... :P