This paper presents two bimanual augmented reality (AR) interaction techniques for product design. The first technique allows the user to visualize 3D virtual object in his/her non-dominant hand while being able to map different textures on it using his/her dominant hand. The second technique is based on nine fiducial markers placed on a desk in front of the user. Two experiments were carried out using the second technique to compare four different markers arrangements and four viewing conditions. In these experiments, subjects were instructed to perform nine actions such as rotate the object, apply a texture on it, etc. Results of the first experiment revealed that a V-shape configuration was the best. Results of the second experiment revealed that camera placed behind the user was the more efficient condition.