Is it reasonably possible for one person to remove caster cups, roll a wheeled baby grand a few feet out of the way on a hardwood floor, and then roll back and replace caster cups?
Technically yes, if you can lift each corner of the piano high enough AND kick the cup out all by yourself. Lift with your legs, not your back!
The real challenge would be reversing this operation- lift and sliding cup back in place with a foot.
I worked for a piano shop long ago and this was basically the same method we would use even to completely remove legs to tilt them up onto the sleds to put on trucks. I think we could do it with just 2 people.
Also make sure the castors wont damage the floor…pianos aint light, and those metal castors arent forgiving!
Oh, right, didnt think about it trying to roll when replacing the cups. Maybe try a make-shift wheel chock with some towels or wood wedge, really anything you could jam under the other wheels.
Are you sure the wheels will even damage the floor?
Is this a stage, like normal black stage deck? If so, you’ll be fine. If not, and the hardwood is like a really nice finish or dents/scratches easily then there’s likely to be a risk. How was the piano brought in?
I didnt think to ask if the castors were plastic or metal? If they are plastic, you’ll be good. I was thinking about the wide metal castors ive seen a lot. If they are metal, unfortunately i dont have any perfect answers- you’ll have to get creative, i guess. Cardboard, scrap carpet pieces, basically anything to buffer under the castor. But nothing you’d want to reuse ‘cause the castors might damage your makeshift padding.
The casters on most grand pianos are not sufficient to move them .best is 3-4 strong 'guys' who lift the piano and carry it 'you don't need to get all the weight off the wheels, just most. And of course those 3 'guys' lift each leg enough to get the cups out.
Strong girls can do this job, but I've never seen any try.
Pretty much. On a cement floor they would work ,but they are too small for carpet. Even wood floors often are too soft and they dig in. If they work great, but if anything goes wrong your first clue is the legs breaking off at the piano.
If you can lift one 'end' of it enough to kick that caster cup out without injuring yourself, then I think you're good to go. Of course you'll have to do it about 6 times. After all this I think a picture of your successful completion would be awesome!!