Dollar Tree, Inc., of Chesapeake, Va. voluntarily recalled about 470,000 Crafters Square Hot Melt Mini Glue Guns because the recalled glue guns can short circuit, causing the gun to smoke. This poses a fire hazard to consumers.This recall involved the "Crafters Square Hot Melt Mini Glue Gun" with product number "939701". The gun dispenses hot glue and is intended for craft projects. The glue gun is black with an orange trigger and measures approximately 4 1/2 inches from the back of the gun to the tip. It has a 44-inch electrical cord attached. "Crafters Square" and "939701" are located on the guns' packaging. "DS-010 Glue Gun" is written in raised letters on the handle of the gun. The products were sold at Dollar Tree, Dollar Bill$, Dollar Express, Greenbacks, Only One $1, and Deal$ stores nationwide from December 2007 through March 2008 for about $1.