1. It takes a lot of force to detach the fingerboard, and the fingerboard does not know when it will suddenly detach. Once the keyboard slides out of control, people and the instrument will be hurt. Always want to maintain to have a thumb to press on finger board, be in prevent finger board falls off the position that injures to touch face plate, had better wrap soft cloth on face plate.
2. After removing the chord pillow, place the front of the piano opener diagonally across the upper corner of the fingerboard. If you hold the knife in your right hand, hold the fingerboard with your left hand and the neck of the piano. Place your thumb on the top of the fingerboard. Insert the front end of the knife into the joint between the fingerboard and the neck at an oblique Angle from the two upper corners of the fingerboard in turn, so that the fingerboard is partially detached.
3. When both corners are off, insert the front end of the knife into the joint according to the width of the fingerboard and move the knife downward. Insert and move down alternately with two knives, so that the adhesive joint is constantly falling off, if necessary, use a hammer to tap the piano knife. When the fingerboard is half off, the knife can be used as a fulcrum to press the end of the fingerboard, and the knife keeps moving downward until the fingerboard is completely off. Always be careful to keep the handle in position to hold the fingerboard when it suddenly snaps off.
4. If cracks appear in ebony during operation, move the piano opener along the fingerboard and panel joint at the slit. If the ebony continues to crack, it must be moved from the wide end of the neck to the narrow end, but this is more difficult and the edges of the neck are vulnerable to damage.