... eliminate the mildew, unqualified core veneers , so we can get fully qualified starting point 2. joining together the core ... veneers. we can get the no core gap board,this board didn' ... face and back , putty repair, then sanding to get very flat surface. a. before sanding ,face and ... If used abide by the illustration strictly, it can be reused more than 50 times 11) Solve ...