Could driptip do the same work like refilling tool? cause where i live is hard to find and will take so long to get one of that if order from US.
If it is a narrow drip tip the same diameter of the carto, yes that would work. To protect the o-rings from the sharp edge of the carto, it needs to form a smooth seal on the edge and be able to be pulled inside the tank with the carto in order to refill the tank.