Once you have your watch case open, eventually you will need to close it again if you want to wear it. Luckily, closing a watch back is almost as easy as opening a watch case when you know what kind of watch case back you have. In this article, we will be addressing how to close a screw down watch case back that has notches in the back. The article explains how to use a jaxa style wrench to completely this repair.
The first step once you are ready to close a watch case is to check the watch gasket. Gaskets can get old or be damaged during repair – if you are concerned about the state of your gasket, replace it. For help on this, check out our article on How to Replace a Watch Gasket.
At this point, you can close the case back. Start by placing the back on the case, making sure it is not tilted on an angle. Then, begin tightening the watch back with your fingers first to ensure that it will fit perfectly. Turn the back clockwise.
When you can no longer tighten the back with your fingers, you will use the jaxa style wrench to finish closing the watch case. First you must determine which type of tips would best fit the notches in your case back: test the free tips in the notches until you find the pair that fit best. Then, once you know which tips you need, insert them into the wrench.
With the correct tips in place, position the wrench over the case back with the tips facing down toward the back. Using the adjustable wheel control on the top of the jaxa wrench, adjust the opening between the notches until all three tips fit in the notches on the case back. Here’s a handy tip: always match the bottom notch first and then adjust the upper two.
Now that the tips fit in the notches of the case back securely, use the wrench to tighten the back the rest of the way, turning it clockwise.
When you can not tighten the back anymore, you know the back has been securely replaced on the watch.