I sometimes repair and refurbish Roberts DAB radios as a sort of hobby. I do a few minutes a day while waiting for simulations to finish, or just thinking. There are a few fairly common faults and I have the gear.
These are covered in a sort of leatherette, I suppose. This is of appalling quality and is usually very badly worn and torn, even after a couple of years of just sitting on a shelf. This is good, it makes them inexpensive.
It usually scrapes off easily, there's some sort of nasty sticky thin foam underneath which rubs and scrapes off too and then a fabric backing which is pretty robust. The fabric takes paint very well and makes an attractive textured finish.
However one I've just repaired has some areas where the covering is very difficult to remove, and I don't want to damage the fabric.
If it's sunny tomorrow, I'll see if a bit of UV exposure helps, but any other suggestions?