While your machine is cutting, a kerf develops due to the vaporisation of the material as well as the laser beam diameter.
The 'kerf' is the differences between the inner edge and the outer edge. So, your designs must be adapted to this kerf to ensure durable positioning of the inserted parts.
It's very simple - you'll just need to incorporate the calculated kerf by using the 'contour' command in CorelDraw. This way, the cut will be as large as required, and the inserted material will fit in its base (we used a kerf of .21mm).