35MM Hinge Jig Drill Bit Sets Concealed Hinge Drill Bit Guide Drilling Locating Tools for Cabinet Hinges and Mounting Plates,For Woodworking

One would think that for a small tool of this kind, the use is easy. This is not the case: - 2 self-drilling (or self-drilling) screws are provided, but what is their use? - the tool has a graduated part on its axis from 10 to 30 mm (31 mm in reality because there is 21 mm between the 10 and the 30). The drill guide has 5 all: one of 35 mm and 4 holes of 5 mm separated by 30 mm in width and 22 mm in "height". Why 4? To install my hinge, I operated by feeling and a depth of 12 mm corresponds to 13 mm on the graduated axis. Knowing that my door is 16 mm and that the tip of the tool is 3 mm, I was afraid to see a small hole appear on the facade. I bought this tool from Mano Mano because I didn't want a product from China. It missed !