The effect of haptic interfaces on motor skill training has been widely studied. However, relatively little is known about whether haptic training can promote long-term motor skill acquisition. In this paper, we report two experimental studies that investigated the effectiveness of visuohaptic (visual + haptic) interfaces in helping people develop short-term and long-term motor skills. Our first study compared training outcomes of visuohaptic training, visual training, and no-assistance training. We found that the training outcomes for the tested methods were similar when helping participants develop short-term motor skills. Our second experiment assessed the potential of visual training and visuohaptic training in promoting the development of long-term motor skills. Participants were trained during a four-day-long period. The results showed that the participants gained long-term skills through both training methods, and that the training outcomes for both methods were similar. The results also showed that visuohaptic training is a promising method, but that it needs to be further developed to be useful.