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Quick history, last night I installed a servo motor on my old singer, WOW, quiet, slow, even stitching! PERFECT.

Except it hasn't fixed the skipping that occurs when I move from a single ply of leather. Once I topstitch over any thickness at all it skips.

Any suggestions would be appreciated. New leather machine is in my near future, but I would love to still be able to use this machine.

I've adjusted tension, needles, presser foot pressure and thread thickness. If it was timing wouldn't it skip ALL the time?

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I used to run into this problem with thick materials in an old machine, It may be that the material fits, but is just at the point that the presser foot releases tension. It does this at a certain height to enable you to take the work out. If it happens while stitching, or because the foot gets pulled up by sticky material, skipped stitches will occur. If there is not enough top foot pressure, the material can lift a little, I have flirted with letting the blood out, and held the presser foot down with my finger to do those crucial stitches to get by.

"If nobody shares what they know, we will eventually all know nothing."

"There is no adventure in letting fear and common sense be your guide"

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Attached is a comprehensive Sewing Machine Troubleshooting Chart that lists 31 causes and solutions for skipped stitches. TinkerTailor's cause is not explicitly listed, but cause 11 and 12 is close. I've seen his cause explicitly discussed on a UK vintage sewing machine forum.

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Thank you all for your responses.

I'm not sure if it's me Tejas, but I don't see an attachment?

Juile

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splitrail: if I am seeing it right, it appears that the needle went in but the bobbin thread was not locked in. I could be seeing shadows though lol.

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I think that is exactly what is happening, trust me the bobbin is full. haha

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By any chance is there a certain distance or number of threads between the missed stitches?

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Tejas

Thank you so much, what an amazingly detailed trouble shooting guide.

Thanks Again!

Julie

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