Embroidery is the art of decorating fabric or other materials using a needle and thread to create designs and patterns. It is a form of needlework that involves creating decorative stitches on the surface of the fabric. Sewing, on the other hand, is the process of joining two or more pieces of fabric together using a needle and thread or a sewing machine. While embroidery is a specific type of decorative stitching, sewing encompasses a broader range of techniques for creating and repairing garments and other fabric items. **

To design patches yourself, you can start by sketching out your ideas on paper or using a design software. Once you have a clear concept, you can choose the shape, size, and colors of your patch. Next, you can either create the patch using embroidery techniques or by printing the design onto fabric and then attaching it to a backing material. Finally, you can add any additional details or finishing touches to make your patch unique and personalized. **

To prevent the thread of your new sewing machine from turning black, you can try the following tips: 1. Use high-quality thread that is less likely to shed dye. 2. Clean the sewing machine regularly to remove any built-up lint or dust that may transfer onto the thread. 3. Store the thread in a cool, dry place away from direct sunlight to prevent discoloration. **

Longitudinal turning involves cutting along the length of the workpiece, while face turning involves cutting across the face of the workpiece. Longitudinal turning is used to create cylindrical shapes and grooves, while face turning is used to create flat surfaces and contours. Additionally, longitudinal turning is typically used for creating external features, while face turning is used for creating internal features. **

A turning point with a horizontal turning tangent occurs when the slope of the curve at that point is zero, meaning the tangent line is horizontal. This indicates that the function changes from increasing to decreasing or vice versa at that point. In other words, the function reaches a maximum or minimum value at that point. This type of turning point is also known as a stationary point. **

Face turning and longitudinal turning are two different types of machining operations used in metalworking. Face turning involves cutting material from the surface of a workpiece to create a flat surface, while longitudinal turning involves cutting material from the length of the workpiece to create a cylindrical shape. In face turning, the cutting tool moves perpendicular to the workpiece, while in longitudinal turning, the cutting tool moves parallel to the workpiece. Overall, the main difference between the two is the direction in which the cutting tool moves in relation to the workpiece. **

Turning off refers to the action of deactivating or shutting down a device, system, or appliance. This typically involves stopping the flow of power or energy to the device, causing it to cease functioning. On the other hand, turning on refers to the action of activating or starting a device, system, or appliance. This involves initiating the flow of power or energy to the device, allowing it to begin functioning. In essence, turning off stops the operation of something, while turning on initiates its operation. **

There could be several reasons why it's not turning. It could be a mechanical issue such as a broken or worn-out part, a lack of lubrication, or a problem with the power source. It could also be an electrical issue such as a faulty motor or a problem with the wiring. It's important to troubleshoot and diagnose the specific problem in order to determine the best course of action to fix it. **