Can anyone clarify for me, whether these posts (above) are referring to free motion machine quilting (with or without a hoop) or hand quilting (with or without a hoop)? When someone mentions a needle size that is used in a domestic sewing machine, then I'm pretty sure they mean FMQ. Am I correct that FMQ is a term only used when referring to using domestic or long arm sewing machines?
I've been skimming the forum for tips on why my YLI Machine Quilting 40wt, variegated, mercerized long-staple cotton thread is being such a pain. This is a sewn-in-the-hoop coin purse that I've made plenty of times successfully, with Floriani Poly or Isacord Poly 30wt thread, and an appropriate-sized embroidery needle. The project uses Floriani Appli-Kay Wonder & fusible fleece.
The only satin stitching is on a sandwich (sandwich A) of batik, water-soluble woven stabilizer, & fusible fleece ironed to the top batik layer. This area does not tend to break thread even if using the YLI cotton. The worst part is when sewing two other sandwiches (B & C) onto the diamond-quilted fleece sandwich (A). Sandwich B is a zipper pocket folded in half, resulting in 4 layers of batik with a layer of Appli-Kay Wonder fused between layers 1&2, and layers 3&4. Sandwich C is a piece of batik folded over a center of Appli-Kay Wonder. With the poly thread in top & bobbin my machine sews the straight stitch and then the overcast stitch to attach A + B + C just fine with my Inspira embroidery needle.
With the YLI 40wt Machine Quilting thread in top & bobbin, the thread breaks & even at one specific corner the Inspira needle always breaks at stitch 800 of that thread color change, when I stack the Sandwich A + B + C layers. Dealer told me to use a Denim needle (I have lots of Schmetz Jeans/Denim 100/16 needles so I'm using those). So, the Denim needle doesn't break, but the YLI cotton thread shreds, breaks, and acts like the top tension is really loose! Or, I could say the bobbin thread behaves like its tension is too tight (but a Pfaff doesn't have tension adjustment, according to the User Manual). I've never seen so much thread lint!
I bought a lot of the fancy variegated YLI 100% long staple cotton mercerized Quilting Thread in several weights 'cause it looked so fun! Now I worry that I will only be able to use it for straight-stitching. I don't want my computerized Pfaff collecting so much lint, and I hate fixing all these thread breaks! Or,.... could it be that I CAN use it, even in quilting, as long as there is NO double-sided fusible web of any kind, in my project??? Perhaps I need to do some tests with fewer layers of fusible web, starting with all the lint cleaned up so I can see how much new lint collects (as well as whether the YLI cotton thread breaks)?
Sorry for the novel... Any tips? Thanks!
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