Feeding fabric in machine - ends up curved
#1
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Join Date: May 2016
Location: San Jose, CA
Posts: 5
Feeding fabric in machine - ends up curved
I have a Necchi Ex60 that is about 2 mos old. I was at class the other night and noticed that when I sewed narrower, longer pieces together (2.5in x 42in), and held it up, the pieces curved (towards the right). Last night, I fed in some fabric and let the machine pull it by itself. It would start off straight but inevitably would always curve to the right. I tried messing with the presser foot tension but that didn't seem to help.
Does anyone have any ideas? Is this common or should I take it to the shop?
Does anyone have any ideas? Is this common or should I take it to the shop?
#3
Are you sure the fabric itself isn't curved? If you don't match up the grain before cutting long strips, it will bow in the middle. Hold up a strip and see if it's truly straight.
Just a thought.
Watson
Just a thought.
Watson
#5
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Join Date: Aug 2013
Location: east kilbride Scotland
Posts: 1,330
It's important to cut fabric straight on the grain, if not you will get a curve, also if sewing 3 strips together, sew the first two in one direction, the join your third and sew in the opposite direction.
#6
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Join Date: Mar 2011
Location: Ontario, Canada
Posts: 41,539
Put a piecing guide on the side of your machine to make sure you are getting a true 1/4 inch seam allowance. If the seam is correct, check that the tension is good and not slightly gathering the seam line. Too many stitches per inch can cause curving on the seam line. I also press the stitching line flat before opening the pieces to press to one side. Make sure you are pressing your strips and not ironing because that can distort strip sets.
#8
Most machines are going to veer slightly towards the end of a strip, you really have to keep control of the strip with your hand, some feet and machines are a little better at sewing straight than others. I can honestly attest that my big expensive machine did not sew as straight as some of my smaller machines until I switched feet and attachments and now it sews the best straight seam I have ever sewn so many things play into straight sewing.
#9
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Join Date: Aug 2009
Location: United States
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It is what it is.
#10
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Join Date: Dec 2008
Location: Western Wisconsin
Posts: 12,930
If you sew a couple of pieces of fabric together (not strips) without guiding with your hands, you get the curve? If so, this usually means that the feed dogs are not aligned correctly. If they are off by a few degrees, the machine will sew a curve rather than a straight line. My Bernina will sew a straight line even if my hands do not guide the fabric.
Since your machine is only a couple of months old, it is still under warranty. I would take a sample of the sewing and the machine back to where you bought it and ask them to correct the problem. When you pick up the machine, bring some fabric with you and do a test sew to make sure that they actually corrected the problem; you don't want to get the machine all the way home only to discover that the machine still does the same thing.
If the machine sews a straight line on fabric but your thin strips still end up curved, this indicates that the presser foot pressure might be too tight. Some machines allow you to adjust presser foot pressure; check your manual. If the pressure is too high, the foot is pressing on the fabric edges so tightly the edges are stretching as they are sewn. This results in a curved strip after sewing.
In general, high quality machines will come out of the factory with well-aligned feed dogs and presser foot pressure correct. I am not an expert but, in my limited experience, Necchi is not a great brand anymore. Vintage Necchi's are collector's items, but I'm afraid the Necchi brand has gone much the way of the Singer brand in terms of quality in sewing machines. It's not only the way they come out of the factory, either. It's also in how they hold their adjustments. You may want to look into "trading up" at your dealership into a brand that has a better reputation for quality.
Since your machine is only a couple of months old, it is still under warranty. I would take a sample of the sewing and the machine back to where you bought it and ask them to correct the problem. When you pick up the machine, bring some fabric with you and do a test sew to make sure that they actually corrected the problem; you don't want to get the machine all the way home only to discover that the machine still does the same thing.
If the machine sews a straight line on fabric but your thin strips still end up curved, this indicates that the presser foot pressure might be too tight. Some machines allow you to adjust presser foot pressure; check your manual. If the pressure is too high, the foot is pressing on the fabric edges so tightly the edges are stretching as they are sewn. This results in a curved strip after sewing.
In general, high quality machines will come out of the factory with well-aligned feed dogs and presser foot pressure correct. I am not an expert but, in my limited experience, Necchi is not a great brand anymore. Vintage Necchi's are collector's items, but I'm afraid the Necchi brand has gone much the way of the Singer brand in terms of quality in sewing machines. It's not only the way they come out of the factory, either. It's also in how they hold their adjustments. You may want to look into "trading up" at your dealership into a brand that has a better reputation for quality.
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11-16-2014 08:27 PM