Very light fabrics can be difficult to handle, and may fray and get stuck in the sewing machine. Try fastening key points together with heat bondable hemming tape first. You iron the tape between two pieces of fabric to glue them together and to prevent edges from fraying. You can then sew over them as needed for strength. I made a 6’x6′ silnylon tarp with all of the seams glued using an iron on low heat, sewing only the reinforcement points, and was done in less than an hour. I have used it for two seasons with no issues, and there are no stitch holes to weaken the fabric.
I am new to sewing so please kindly explain.. When it comes to the last third sewing picture, when blue and red pieces are facing apart [and red one faces the sewing machine]: on the condition red part is also a very large piece of fabric, how would you possibly squeeze all of it to the machine available space when even rolling the piece tightly will not accommodate the opening.
Andy, the third sewing picture is a flat felled seam, it’s used to add extra strength when joining two fabrics as both seams share any stress. If you can’t get either end of your fabric to squeeze down small enough to fit through, you are better off choosing a different seam. Most likely, you won’t need the extra reinforcement on any seam down two huge widths of fabric.
You can mimic the look of flat felled (which is just the french seam from picture two sewn down flat) by tacking it down with hand sewing stitches after making the initial seam. It lacks the strength of a true flat felled seam, but it’s stronger than a plain french seam and looks better when joining two large pieces of fabric.
I know you asked the question a while ago, I hope this is still helpful!
I’ve just completed my first sewing project, a silnylon tarp tent and it was quite a learning experience. Using paper clips worked well for the folds and placing flooring paper (that I had used for my template) under my nylon for starting small pointed corners helped. The paper stopped the nylon from getting pulled into the machine. I’m happy with the outcome of my first project but would like to learn more on using the sewing machine, any other tips would help for my next project (bug shelter addition for tarp).
another sewing tip i’d add is use small binder clips instead of pins… especially for tarps. you don’t want a bunch of pin holes in your silnylon.
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