Hello all, I hapened on these pictures of trident maple bonsai with a thickened trunk. I have a small one at home and am wondering how this method is achieved. I am however aware of the method using WIRE around the base of the trunk to encourage trunk growth. Is there another method to achieve the look of the trident maple in this picture? or is a wire tourniquet the only way? Even with wraping the wire in paper I fear it harmful to the delicate skin of maples. anyone care to help?