The basics The Hand Ruffer is used when roughing up leather in preparation for applying glue.  The benefits Comes with a Steel Wire Rougher Head that is virtually indestructible. The uses Widely used in the taxidermy trade for use in roughing up styrofoam forms. It is also the shoemaker’s secret to getting a good secure bond for cement, Simply rough up the surface before applying glue. The bottom line The Hand Ruffer is a must for any leather shop.