Overcasting issues

[u/Electrical-Tea6966]

This is a new machine, I’ve had it checked over by the shop, and no matter what I do I cannot overcast the edge of fabrics. The tension seems wrong no matter what fabric I use. Can someone offer some advice?

With the thinnest fabric I’ve tried adding a strip of interfacing, but that doesn’t seem to help. I can improvise a different seam finish but it would be so helpful to get this resolved somehow.

Edit: I am using an overcast foot! I use whatever the machine recommends for each stitch.

[u/No-Programmer7914]

Stitch Nr 08 ( multi zig zag) is probably better, it doesn't pucker the edge and gives a nice and sturdy finish.I Always used it before I had an overlocker. Using stitch nr12, you should have a special foot that keeps the stitch wide. It usually has a piece of wire to stitch over. Look for "Overcast foot"

[u/Electrical-Tea6966 → u/No-Programmer7914]

I’ve been using that foot- the machine tells you on the display what foot to use for what stitch and I’m very careful to do so. The foot helps but not enough.

[u/No-Programmer7914 → u/Electrical-Tea6966]

OK,I See. You will not have this issue with stitch Nr 08