combination of speed and ease of setup allow this Hand Hole Grinder
to out perform all other methods of repairing existing, worn, abraded
and leaking hand hole sealing surfaces. The unique roller arrangement
permits effortless contouring of "out-of-round" hand holes
by following the existing shape.
Truing the grinder
to an existing hole is accomplished by turning the four adjusting
screws and aligning the stone to the adjacent sealing surface. The
thumb wheel micro feed adjusts the proper depth-of-cut, so that
minimal amounts of material are removed during the grinding process.