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To make the eyeglass case we need:
• binding paper (thickness 2 mm);
• whatman;
• cotton;
• 2 types of glue: PVA and "Moment" (Crystal or Universal);
• masking tape;
• magnet for bags;
• pencil, stack, ruler, clerical or circular knife, glue brush, thread, needle, scissors.
First, cut out the necessary parts of the case from cardboard with a clerical knife.
Here is a simple diagram of how the case will look. Below are the parameters of each side. Also, the diagram shows a sketch of the lock for the case, which will be discussed later.
Parameters of the sides of the case for glasses:
a = 16.6 x 7.6 cm
b = 17 x 8 cm
c = 16.6 x 6 cm
d = 6 (at the base) x 7.8 x 7.8 cm
h = 7.5 cm
Now cut from the Whatman paper two copies on each side according to its size. For the outer sides a and c, the length of the cut specimen must be increased by 4 mm.
We make the edges of side a beveled with a circular knife or a clerical knife so that the corners of the sides do not interfere with each other.
We glue the sides (triangles) to the base, adjusting with a ruler with an acute angle so that they are perpendicular to the base.
Glue the three edges of side a with glue and fix it well between the sides. In this case, the beveled side looks inward.
Here we have such a beautiful angle on both sides of the structure.
We glue all internal and external corners of our workpiece with masking tape.
Glue on the sides a and on both sides d the outside of the cut pieces of whatman paper. Glue also on b - the glued side will be outside.
Cut out the fabric with allowances so that the sides a and both sides d are completely glued.
Glue the fabric on a very thin layer of glue, leveling the surface with a stack. Carefully trim the unwanted fabric around the edges and glue the corners.
Cut a “hole” on the inside of side b and cuts for the first part of the magnet. You can use magnets without a lock.
Cut the fabric so that it sticks to side c and b at the same time. Glue the prepared piece of Whatman paper for side c, gluing only three sides.
Glue this part to the base (side c). We prepare a root 16.6 cm long (the extreme sides must be folded).
Sew it on the layout for the lock and insert the layout itself from the Whatman paper, attaching the second part of the magnet to it.
We glue the lock (Moment glue), side b (distance from side c = 7 mm) and only then the root (PVA glue, glued along all the bends) to the parts of the case. We insert the magnet part from the outside, fixing it from the inside.
We glue the inner part of the case with prepared blanks (whatman paper is glued with a cloth in size). In this case, first we glue the inner part of side a so that the side and lower edges capture the other sides (helping to form the corners with the stack).
Having glued all sides, we get such a finished case.
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