I would use muslin and just staple it on with a stable gun. They Usually use a thin paper sort of stabilizer material in the first place. Good luck
Muslin may not be strong enough, but maybe some canvas.
I have sewn a dog bed from jeans, the ground was from vinyl, inside cover to wash . . .
You becomes good toys in the specialist shop, especially for puppies teeth,
as long as the small dog teeth agrees he will bite everything broken... and more favourably than a veterinarian visit . . good luck !
I never thought of jeans fabric. Sounds like it would work well if I can get it attached to the bed!
I am not a fan of hot glue. Don't think it would hold together very well or long. I would use a strong glue that bonds fabric. Vinyl does not fray so can't you sew around the edges? That would be the best solution. Hug. Nan
I think your idea of using a hot glue gun is a good one. Vinyl should be fine, I would guess just not to go overboard on the hot glue so nothing melts. Good luck!! Puppies are puppies!!!