For best results when doing machine embroidery, it is recommended that you use an embroidery hoop that most closely matches the size of the embroidery design. By using a 40mm x 40mm embroidery hoop for smaller designs, your fabric will be held taut and placement on your project will be more precise than when using a hoop too large for the design. In addition, you'll eliminate the use of excess stabilizer(s) that occurs when using a large hoop for these same designs.