From this post, I got the idea to remove and replace the wheels altogether using a hacksaw.
Here’s what it looks like right now. My problem now is that I can’t remove the leftover metal shaft from the caster wheel.
I’ve tried using some lubricant and hammering it with a screwdriver but it didn’t budge.
go to a big box store. go to the metal bar stock section- usually they’re in the pick-and-choose nuts and bolts area. Alternatively, just ask. (I like local hardware stores, they’'ll have it too, somewhere. better selection of pick-and-choose hardware, too.)
Get some smooth rod slightly smaller in diameter than the rod there. use the rod to knock it out- either in a press (if you have access to one) or by setting it in some kind of clamp and pounding on the rod with a hammer.
if their only options for bar stock are expensive, you can get a bolt that’s also slightly undersized and use that.
for the record, the wheel looks like it’s an absolute gonner, so you’re probably going to have to get more parts anyhow.
is it okay to borrow the press in the hardware?
if not what kind of clamps do I need? a Vise grip?
I don’t think I’ve ever seen ‘vise’ written down before, I always just assumed it was spelled ‘vice’! You learn something new every day
British spelling is vice.