cross-posted from: https://slrpnk.net/post/2890733
I think I need a sewing machine that can do a variety of different kinds of stitches. One use case is to repair holey socks by cannabalizing fabric from other holey socks. Thus the stitch needs to be the kind that can stretch and ideally not create an awkward feeling on the foot.
Some sewing machines have a fixed number of stitches they can do. Would it make sense to get an embroidery machine and use #inkStitch (an Inkscape variant)? I’m not sure if that’s strictly for embroidery – or does that give the ability to do a variety of stitches using FOSS?
The inkstitch.org website steers people toward taking a basic sewing machine and modifying it using 3d printed parts. That’s too ambitious for me. I don’t want a hardware project. I just want to buy hardware that’s ready to go and use free software to control it. Is that possible with things that exist already?
Singer is one of the most popular brands so will be easiest to find parts for. Husqvarna and Brother are slightly less popular but still pretty popular. I've never heard of any other the other brands you listed. Some parts, like needles, are standardized. Others aren't.
You can't sew with two needles at once, but there is such thing as a double needle that's used for special cases. More than likely you won't need one. The second spool holder is most likely for 1) use with a double needle, 2) quickly swapping out thread colors or 3) actually a bobbin/spool winder and not actually for holding a spool you're using.
As for stitch pattern symbols, each symbol is supposed to look like the stitch it creates. I would recommend trying to find a video showing all the stitches for whatever machine you pick. If you can't find such a video, you can experiment with some scrap fabric.