To be fair, these are complex machines trying to perform repeated precision tasks in cramped spaces. Basically giant cast iron pocket watches. There are better fasteners, but sewing in general follows very traditional tooling methods. Most any factory in the world has slotted screw drivers lying around, and *maybe* a set of hex keys.
I have an Adler cylinder arm sewing machine at home that uses stainless torx screws for almost everything and I LOVE IT.
For sure. Needle plates are designed for ease of manufacturing though, a couple tabs for attachment points bent off the side or back would negate
the whole issue of possibly bricking the entire machine because oops screw stripped. Who the eff uses 2.5mm screws anyways.
My fathers brand new Ford truck continually drained the battery because an ota update caused the display to get stuck in a boot loop that couldn't
be killed. Sometimes it's the little things that ruin the whole thing.