ewing has never been easier and it’s all thanks to the Expert Sewing Machine 505C PRO.
With its user friendly operation and efficient design
The 505C PRO is a great buy for anyone looking for a sewing machine that will get the job done fast and proper
Product Description
You can't get proper tension without correct threading. All machines have basically the four tension devices shown here- thread guides, tension discs, tension regulator for upper thread, and bobbin-case spring for bobbin thread- which ensure that the same amount of thread flows simultaneously from the needle and the bobbin, producing a symmetrical stitch.
The flat bobbin-case spring exerts pressure on the thread as it comes out of the bobbin case. The amount of pressure is regulated by a small screw at the rear of the spring. Both the spring and screw are easy to locate when the machine has a separate bobbin case. When the machine has a drop-in bobbin with a built-in bobbin case, locating the tension screw can be more challenging. Both types are shown in the drawings below. In either case, to increase the resistance, use a small screwdriver to turn the screw clockwise (to a higher number) or counterclockwise (to a lower number). Turn the screw in small increments and never more than a quarter-turn between tests. This helps you keep track of how much you're changing your settings and reduces the risk of losing this very small screw.
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