My machine is a current-model Singer Heavy Duty (4452). It's been mediocre with 30D silnylon fabrics. It requires a high tension setting and lots of careful hand-tensioning of the fabric while sewing. And I'd still routinely get inconsistent stitches along a long run.
Then I bought the Singer walking foot accessory whim (I only need a zipper foot, but hey, this is only 20x the cost). It works amazing well on my machine with 30D sil! Did the first straight stitch of a felled ridgeline with only 3 pins and it was a nicer looking straight stitch than any I'd made yet. No holding the fabric behind the needle, just lightly holding in alignment and letting the machine move it.
Sharing because I'd read on here and other forums that the walking foot accessory was probably a waste for light fabrics, so I'd skipped it. Well at least for my machine, it works. It might make me a cheater, or be a crutch, but for now it's staying on the machine.
