A horn is a simple device for amplifying the volume of a sound. A simple horn can be made from paper material. It consists of two parts - a bell and a neck. Start by making a socket.
Instructions
Step 1
Take heavy paper for office equipment. Draw on a piece of paper a petal with a base of 3.2 cm and a length of 22.4 cm. The side parallel to the base is 9.5 cm and has a slight rounding. Each petal of the bell has not a straight line along its length, but a smooth transition.
Step 2
Cut out one template and trace it with a pencil along the path to get 10 petals. When you cut out the blanks, leave a segment 0.5 cm wide on the left side of each of them. This segment is needed to glue the next petal.
Step 3
Cut the hem in several places so it can be easily folded back. Use wood glue instead of ordinary paper. It is better to glue not in a chain one by one, but in pairs, then glue the pairs. Allow each seam to dry, otherwise the seams may come apart when the next petals are glued.
Step 4
The mouth of the horn is tapered. Draw a straight line 35 cm long. Place the compass at the base of the line and draw one arc with a radius of 7 cm, and the other - 31 cm. On one side, leave an edge 0.7 cm wide for gluing. Glue the cone. After complete drying, make 10-12 cuts 1 cm long on the narrow side of the cone to glue the nipple.
Step 5
It is convenient to glue the branch pipe on a wooden disc with a diameter of 2 cm. To easily remove the finished branch pipe, wind 4 cm wide strips of paper greased with glue onto the disc until the wall thickness of the branch pipe reaches 1.5 mm. After drying, remove the pipe from the blank.
Step 6
Lubricate the cuts of the cone with glue from the inside and insert the nipple. Additionally glue the top with a strip of paper in a circle.
Step 7
Fold the finished parts of the horn so that the neck goes into the bell from the inside to a depth of 0.6-1 cm. Carefully grease the edges of the bell around the entire circumference with wood glue, bending the neck with your finger inward. Cover the outside and, after drying, cover the inside with a layer of liquid wood glue. The mouthpiece will become hard. You can varnish or paint the horn if you wish. It will amplify the sound noticeably. Using the same scheme, you can make a horn from tin, only you need to be able to connect the seams by soldering or into a lock.
