Of course, after decorating the product with crystals, the elongation decreases slightly. The glued crystal fixes the geometric shape of the mesh fragment under it and prevents it from stretching. If there are a lot of crystals glued on, the overall elongation of the product will decrease by a serious amount. Such products must first be cut with an increase in length and girth. It is difficult to predict the amount of the increase, because it depends on the area occupied by the crystals.

But all this matters if you really glue a lot of crystals so that you can hardly see the fabric between them. If the number of crystals is less, and the mesh and lycra without crystals occupy a large area, and the elasticity of the product has deteriorated significantly, then it is necessary to check the reaction of fabrics to heating with an iron.

Do a simple test: take mesh and lycra fragments with an exact size of 10cm x 10cm. Accurately measure the elasticity of these fragments before heat treatment, record the results. Carry out the processing with an iron at the same temperatureand duration as in the process of decorating with crystals, and check their elasticity, compare the obtained results with the preliminary ones.

Also, remember that sewing on the appliqué already significantly reduces the initial elasticity of the mesh. Dyeing fabrics also reduces their elasticity. Taking a mesh with high elasticity, we always get much less elasticity of the parts in the product. This is normal and this decrease in elasticity is incorporated into the pattern.