After both side trims have been cut,

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wood saw;
fasteners (finishing nails and glue)
protractor;
roulette.
First, the trims are applied to the height of the door, and the required length is measured. Then the strip is placed on a flat surface and a right angle is marked with a square. The excess is cut off;
the casing with the finished angle is applied to the door frame, aligned along the edges and at the bottom. The height corresponding to the internal hum of the door frame is marked;
then, starting from the mark made, using a protractor, an egypt mobile database of exactly 45 degrees is measured and marked with a pencil. The excess is cut off and the casing is temporarily put aside;
repeating the entire sequence, the parallel side is marked;
Tip: the top trim is prepared last, only after both side strips have been cut and installed. This will prevent errors in marking and eliminate the possibility of gaps at the joint.

their installation begins. Nails are driven into the door frame, after which the head is removed using nippers, leaving a sharp corner. The length of the nail on the surface for installing the trim is left approximately 5 mm;
nails are driven in at intervals of about 50 cm. They are usually placed at the top, bottom and two in the middle;
for better adhesion of the casing to the frame, glue is applied to it. At this stage, the main thing is not to overdo it, and when pressing, the glue should not squeeze out;
When nailing a strip to a door frame, it is not recommended to hit it directly. For this purpose, a wooden block wrapped in fabric is prepared;
having applied the finished casing and aligned it, we place it on the nails with strong blows through the block;
When both side trims are installed, the marking of the top one begins. Both of its 45-degree angles are measured not with a protractor, but by directly placing it on top of the side strips and drawing the cut location with a pencil.
Installation of door frames is complete.