Watch Case Press Operating Instructions
When closing a snap-back case back, it is best to do it by hand if possible. If the back is too tight, then a case press is the best alternative. If you have junk watches handy it is advisable to practice the above procedure a time or two.
14 dies (seven hollow dies “A” and seven flat dies “B”) are included with your case press. Be sure that the correct size die (A) is used. Place the watch face down into Die A. It should touch the bezel of the watch without touching the crystal. Also, be sure that the die is not touching the crown.
Put the back in place. Be sure that it is properly inserted into the bezel. Also, make sure if a gasket is present, that it is fitted properly to ensure a watertight seal. Check that the gasket is not twisted or out of place.
Use a flat die (B) that is the same size as the back of the watch. Be sure that it is not too large. The flat die will fit into the shaft at the top. Please note: use the 16 mm flat die for all watches that use the 18 mm hollow die.
Press down on the press gently. You may hear a slight click (if you don’t, take the watch and examine it to make sure that the back is flush against the bezel all the way around). Remember, very little pressure is required when using a case press.