Materials: chisel, screwdriver, drill, carpenter�s pencil, wedges.

As for the hinge itself, note that there are many kinds, including latch hinges, spring-release, flag-type and slip joint, among many others.
Hinges are measured by the length of the plate and the width of the two leaves when they are in the fully opened, flat position. A hinge must be proportional in size to the length, width and thickness of the piece it is to bear.

Checking the door
Begin by checking how the door fits into the frame. There should be 6mm at the bottom and 3 mm at the other three sides of the door. Hold the door in place, adjusting its position with wedges until the fit is just right.

Preparations and Precautions
Measure the length of the door and divide by seven. The resulting number will be the distance between the hinges and the upper and lower edges of the door. This rule varies for panel doors, in which case the hinges are placed at the ends of the upper and lower crosspieces. The hinges are attached first to the door and then to the jamb, with special care taken to make sure they are perfectly parallel to the edge of the door. Also keep in mind that the pin of the hinge should slightly overshoot the inside surface of the door.

Making the slots
Trace the outline of the hinge by superimposing the corresponding leaf and cut with the chisel. Work with the tool moving upward. The depth of the space you create should equal the depth of the hinge�s plate. Clean out the space with superficial strokes. It is better to make many small cuts than a few big ones. Cut with the chisel following the line of depth. The beveled side of the too should face upward.
Setting the hinges
Drill holes for the screws and insert them to hold the hinge in, turning to leave the screws tight. Make sure the plate of the hinge is flush with the edge of the door. If you have gone too far and gone too deep, try to correct this error by raising the hinge with insertion of cardboard wedges until the proper level is reached.

Checking and final adjustments
Once both hinges are screwed in, remove the wedges from the bottom of the door to see how the door swings. If the slots are deep, doors tend to lean away from the doorframe. If this happens, remove the door and use chisel to deepen the slots. If the door shows the opposite tendency, it means the slots are too deep. If this is the case, use cardboard wedges as mentioned earlier to fill them out.