would it be poss to grow a tree from a apple tree and then graft onto that?
sorry grow a tree from a apple SEED and then graft onto it?
No, unless it's a crab apple or you don't mind if it grows weakly. Crabs are traditional rootstocks, but unless you want a massive tree that's going to take many years to fruit, you need one of the modern ones.
cheers robert ,do you know any rootstock suppliers whoi can buy from to graft onto?