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Simple straight stitch gone wrong?
Grain lines causing straight stitch to be bad
beserres
beserres
Intermediate
District of Columbia USA
Member since 4/17/13
Posts: 4
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Date: 4/19/13 10:51 AM

Hi All,

This is my first post, so hopefully I'm in the right spot. I am sewing a strap for a bag, and I promise I'm able to sew a decent straight top stitch. In the picture below, the stitching on this came our really strange. Is there something I'm doing wrong, or is it a nature of the fabric or my machine (cheapy singer talent)? You can see a jog in the stitch everytime it crosses a grain line, which in this fabric are somewhat wide. Any tricks to prevent this, or just don't use this fabric? It's a sunbrella cotton canvas which I thought would be great durability for a strap, but I can't have it looking like this!

Thanks so much!
Ben

Sewandwrite
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Sewandwrite  Friend of PR
Advanced Beginner
Maryland USA
Member since 5/16/08
Posts: 901
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Date: 4/19/13 10:57 AM

Ben -- What kind of needle are you using?

kkkkaty
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kkkkaty  Friend of PR
Intermediate
Utah USA
Member since 12/7/05
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In reply to beserres <<


Date: 4/19/13 10:57 AM

That's a pretty tough fabric. Might try a bigger needle (one for Jeans/denim), or a sharper needle? Looks like the fabric is causing the needle to deflect.

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Viking Lily 545
Viking Ruby
Bernina Activa 210
Brother 1034d

beserres
beserres
Intermediate
District of Columbia USA
Member since 4/17/13
Posts: 4
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Date: 4/19/13 11:13 AM

Thanks for the quick insight! The needle thats in there has been for a while, I know it's a larger needle but not sure exactly which one. I will replace it and give it another try.

Thanks!

PattiAnnJ
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PattiAnnJ
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Date: 4/19/13 11:41 AM

You definitely need a new needle. The size is on the top of the needle shaft, if you want to check what you are using. You will need a good light and maybe a magnifier to see this.

This overview shows the different types of needles suggested for various fabric selections.

There may also be a chart in the manual for your machine. Looked it up for you - page 51.

Change often. No one knows for sure how often, as hours, fabric type and how many pins you sew over all come into play. So I do a sample using the same fabric and thread so I can test the stitch length as well as needle size and type selection.

PS: You should not sew over pins, remove them as the sewing process approaches their location. Hitting a pin can dull or break the needle, bend or break the pin or jam it down into the needle plate opening.

And, I have the "cheapy" Singer 1507 and it sews through a jeans hem (at least 8 layers at the outer seam) like a hot knife through butter - you just need the right needle.


-- Edited on 4/19/13 12:01 PM --

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"Improvise, adapt and overcome." - Clint Eastwood/Heartbreak Ridge

SewButterflySew
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SewButterflySew
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California USA
Member since 9/10/12
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Date: 4/19/13 12:01 PM

I've noticed when sewing straps (mine tend to be thick - fabric wrapped around nylon webbing/strapping), that a longer stitch length will often give a prettier topstitch, so you may try lengthening the stitch length (if you haven't already). That would give it less places to get caught up in the grain.

Also, if your fabric can get wet, you may want to try using a narrow strip of water soluble stabilizer on top of your strap to prevent the texture of the fabric from being an issue.

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