I wish we could find a better solution than grub screws for attaching pulleys to shafts in 3D printing. Small-scale requirements make it difficult to use other industrial systems.
Grub screws often loosen under the effect of vibration even with Loctite. They also introduce eccentricity. And the tip of the grub screws marks the shaft, making it difficult to remove the pulley.
I'm going to have a bit of a #tech#rant (less charitable people might say #whine) here. If you just want jokes and cute bunny pictures, feel free to skip this one.
Object of my #ire this week? #Furnaces. I'm not even going to rant about their main control boards; most of that's been said better than I could say it, by others with more knowledge than I.
Things didn't change much for a long time. They went from being driven by a #belt and #pulley to direct drive, because that's a little more #efficient, and there's no belt to have to inspect and replace (or worse, snap in the middle of winter).
But as houses became better-sealed and #insulated, a couple of things became issues.
(1) Because the furnace wasn't running as much - not as much cold #air#leaking in, and #heat leaking out through the walls - the air stratifies.