I have a Brother NX 250. I was sewing together some quilt blocks that were made up of half square triangles. I tried to sew together the half square triangles, going across the seam and seam allowance of the underneath fabric. The machine would not feed past these seams.
I went through the manual, looked up suggestions online, rethreaded, made a new bobbin, changed thread, checked tension, adjusted the foot pressure, checked the feed dogs, did a thorough cleaning. Finally I took it to an authorized dealer. He suggested that maybe the front teeth on the feed dogs were worn, so he installed new feed dogs. Everything worked fine for a week or so, but now it has started again, but it is an intermittent problem. The feed dogs seem fine, everything feeds through until I get to one of those seams, then it won't advance. I emailed Brother, with no real solution. I am at a loss. Any suggestions?
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They have YouTube videos on this to help you out!
You may need a rolling foot. You can also put tissue paper over and under the fabric to help it feed.
There are times that a seam is too thick for a machine to pass over it or feed it through the feed dog. In some fabrics you need to help the material pass through by tugging on it a little bit.
Are you using pins in this situation? I have found pins often cause issues like you describe. I find if I take the pins out before it feeds it goes easier.
The other trick I use is I kind of hold the feeddogs up a bit on the thicker seams to "help" the fabric pass through. I should do a video on this because I can't really describe it....its like I kinda lift the foot with my left hand, and "pull" the fabric with my left hand.
I hope that helps you! It works for me. I am in the process of finishing a very thick quilt made from recycled denim--I left many of the original seams in--and this has helped me.
Post back with an update.
EDIT: its like I kinda lift the foot with my left hand, and "pull" the fabric with my left hand as the right hand holds it steady. Almost like hand walking each of the stitches in the thickest part.
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