- Created: 4 March, 2019
88.6 The Singer Heavy Duty 4452 is the pinnacle of the Singer Heavy Duty line of sewing machines. This mechanical sewing machine sews very quickly and is very easy to setup and to use. It is a good fit for both the beginner and the more advanced sewist. It is also easy to thread and is capable of sewing through thick materials such as denim, leather and canvas. On the downside the foot pedal feels poorly made and it does not regulate speed well. In addition, a number of folks report struggling with tension issues.