I followed a PAR training as a painter. co coveted intern model 100 cm I had, he wanted me to give him. which can be very useful with his knowledge in painting, I suggested a barter. paint me as part of a bike (it controls body paint wonderfully) against the model of 120 cm square. he was very happy (my side I had filled it falait count on 100). to conclude it's great although there is possible to right angles.
