While it’s normal for your sewing machine to make a light mechanical noise when you use it, it’s not common to hear a knocking sound. If you do, then it’s likely that there’s a problem with the internal components of the device. Below are three reasons that you might encounter this odd noise.

Why Is Your Sewing Machine Making a Knocking Sound?

1. Needle Damage

One of the most common reasons for knocking sounds is damage to the needle. Problems like this may occur if you’ve recently worked with a thicker than average fabric. The needle may not be strong enough to handle the pressure and could develop a bend or lose its integrity. When it becomes blunt, it can eventually break or create that telltale knocking sound, which can serve as a warning sign that it’s time to replace the needle.

2. Poor Lubrication

The sewing machine contains several moving parts, all of which should be properly lubricated to prevent friction that causes knocking sounds. The machine oil helps create a protective, slick barrier that minimizes strain on neighboring parts and keeps everything running smoothly. When the knock develops, it’s usually a sign that lubrication is lacking and that the parts are rubbing against one another. If you aren’t sure how to replace it on your own, have a sewing machine repair technician handle this step for you.

3. Lint Buildup

Over time and with regular usage, dirt, lint, and other minuscule debris can build up in the bobbin case. Eventually, this accumulation will make it difficult to create proper stitches, which is why it’s important to clean the case routinely. However, the buildup will also cause a knocking sound when the needle moves into and out of the bobbin case. For best results, clean the case every time you change the bobbin.
 

If you’re concerned about a peculiar knocking noise coming from your sewing machine, turn to the experts at Riehl Sew N Vac in Anchorage, AK. The company offers a variety of options, including sewing machine repairs and general service. They also carry sewing notions and storage solutions so that you can keep everything that you need within easy reach. Visit the website for more information, or call (907) 563-2909 to speak with a representative.