Technician's Notes

Service Tip, April 2013  

Here’s a nasty little trouble-maker for your sewing displeasure.  It’s a burr on your hook.  I don’t mean the burr under your saddle, or on your fishing hook, but the one on your sewing machine hook.

The hook is the pointed piece that rotates around the bobbin and catches the loop of thread formed when the needle moves upward through the fabric.  If there is roughness (a burr) on the hook, too much thread will be pulled and the take-up lever and thread regulator spring won’t be able to tighten the stitch.

Depending on the severity of the hook damage, the symptoms of a burred hook are loose loops of top thread on the underside of your fabric, sometimes in concert with breakage of the top thread.  That’s a concert you probably won’t enjoy.

The burr is the result of some hard metal object, usually your needle or a piece of a broken needle or the pin you sewed over, colliding with your hook.

If you are experiencing the above symptoms, bring your machine by the store and we’ll repair the hook.  It usually just takes a few minutes, and only in really extreme cases will the hook actually have to be replaced.  It will be helpful if you bring along samples of the faulty stitching.

Boone