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Old 12-26-2007, 05:56 PM
Pudycat
 
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Stitch Length changes

I finally got a walking foot machine and was ready to put the pieces together but my stitch length changes when I try to sew thick material. I am ok with two layers of vinyl but if I use sew foam and try to do french seams (double sew foam) my stitch length changes along the seam. Even in practice conditions with 2 layers of sew foam it is hard to get the stitch length consistent, and even when I come close the stitches are not as long as my setting.

I this because of the pressure on the presser foot? In general should I be trying to tighten or loosen the adjustment for the presser foot? Any other suggestions?

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Old 12-26-2007, 09:52 PM
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What kind of foot are you using to do this sewing? If you are using a smooth bottomed presser foot that may be the problem. Does your machine have a feed dog on the bottom under the foot with teeth to help move the fabric through the machine? How fast are you trying to sew? If you go too fast this may cause a problem when sewing that much thickness.
Industrial walking foot machines have to be able to handle different types and thicknesses of fabrics. Consequently, they have an adjustment for downward pressure that may have to be changed for that much thickness. Look in your sewing machine's manual for how to make the adjustment. If you don't have a manual, find one or call a professional sewing machine mechanic and ask how to do it. What brand and model of machine do you have? Someone here might have the same machine and have a manual.
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Old 12-27-2007, 08:49 AM
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My presser foot is not smooth, it has teeth. I bought a Tuff Sew, they call it a mini-walking foot The manual does not say anything about adjusting for material thickness but there is a Presser foot regulating thumb screw but I don't know if I should try tightening or loosening the pressure to adjust for thickness. I will also try sewing slower.
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Old 12-27-2007, 03:30 PM
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Is this an industrial machine? You would need to loosen the adjusting knob. The info on the industrial lockstitch Tuffsew I looked at online says it has fully adjustable presser feet. It also says its lift height is only 1/2", which is not much, and it will handle up to 3/8" thickness of material, also not that much. I think you are just trying to get more stuff through the machine than it can handle.
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Old 12-27-2007, 06:15 PM
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You hit it on the head. It is a walking foot but not truly an industrial machine. At full adjustment it will function for most thicknesses but not all. You get what you pay for. This was a great price for a new machine and it was portable. It has a purpose but it is not a substitute for a real upholstery machine.
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