The file in order to remove the oxide which comes in contact with the pin-jack - male female, the pin plug - male female and the AC adapter - male female

摘要

Topic The oxide of the plug contact breaker points, offer of the file which can do to remove oxide simply without it interposes the file which is agreeable to plug form and it breaks by turning, grinding the part too much, to pull out part original performance.SolutionsThe surface which the contact breaker points of the plug oxidize appropriately form of the contact breaker points of each file as the male or the female of the plug by making the same form, is ground equally. The base which installs the hard abrasive grain or the sandpaper where as for A, as for thing or sandpaper and B which make the hard abrasive grain adhere, when the thing or the sandpaper which makes the hard abrasive grain adhere interposed & turned, it is caught, the step in order height control because it does not fall off inside the part, adjusts C, to the form of each plug, forma it takes with suitable declaration material such as plastic. Choice figure Drawing 5