Couldn't decide on the forum so mods move if needed please
At my
slave guitarists request, I built a platform for my bass amp to add castors. I didn't want to drill any more holes in it and couldn't match up with the old holes that were there, so I took a piece of plywood, notched out the corners so the rubber feet could stick through, added 4 small castors (100lb capacity, about 1.5" wheels, locking type) I got on clearance , and used velcro to secure it to the bottom of my amp. So far, so good. Removable if the amp's going in my truck or if we play somewhere I don't trust the wheels, but stays on just fine the rest of the time.
However, I'm noticing the castor wheel material seems to be soft, it's picking up pieces of the sidewalks and stuff already. I know nothing about ordering castors

. Anyone know of a specific place to buy castors at a reasonable cost that are a harder material? I looked at a few music sites because I thought for sure they'd sell em for amps, but only found the kind that pop into recessed holes. The idea is to not add holes so that won't work.
After seeing my bass amp dolly....now the guitarist wants me to build him a platform for his amp. So I'd like to get better castors for his

.