Whether it be electronics, automobiles or medical equipment, the manufacturers should not be able to horde “oem” parts, render your stuff useless if you repair it with aftermarket parts, or hide schematics of their products.
Summary video by Marques Brownlee
Great channel covering and advocating right to repair, Lewis Rossman
Basic blender went bad (motor ran but spindle wasn't rotating). I wanted to disassemble to see if it could be repaired. Three of the four screws were Phillips head. I had to cut the casing open in order to discover why I couldn't unscrew the fourth. It was a slotted spanner.
It's called an "H-type" head. I found some tools for that on eBay but was reluctant to spend any money on something I'd probably never need again, ever. But this video shows a hack using scissors.
https://www.youtube.com/watch?v=GA6_S9YkZEc
I didn't have a pair laying around that worked but the video inspired me to MacGyver my way to remove that aberration against all that's good in humanity.
in a case i only needed it once, i would solder or power glue something to it to use as a wings handle.
... but that's just me. I'm like eccentric MacGuyver.