This is a very small test for printer, there will be a 10mm box with a lid right next to it. now the goal is that the lid should fit the box perfectly, ( i have not been able to do that yet but i am calibrating my printer for that) and there are latter X,Y and Z carved on the box too, if your printer is fine tuned then those latter should be printing fine too. No need to print any rafts because this will also test the first layer print adhesion too.