Drilling of the anterior skull base via the expanded endoscopic endonasal approach is a delicate and complex neurosurgical procedure that may result in mechanical and thermal injuries to adjacent cranial nerves, arteries, venous structures, dura mater, and brain parenchyma. Patients suffering from malignancies of the anterior skull base often require radical surgical resection of the tumor. High-speed drills mounted with miniature diamond burs are typically used to remove the bone to provide exposure for tumor resection. This procedure often includes drilling the bone encasing the optic nerves, cavernous sinuses, internal carotid arteries, and branches of the trigeminal nerve. Two of the most feared complications of this surgical approach are (1) thermal or mechanical injuries to cranial nerves from drilling, and (2) stroke caused by coagulation of blood in the internal carotid arteries because surgeons cannot ascertain the tissue temperature or control the extent of thermal injury during the bone drilling. What is more, this procedure is now commonly performed endoscopically, for which visualization requires skillful manipulation of the endoscope, rather than the open visualization to which surgeons are accustomed. Currently, there is no existing physical anterior skull base simulator available for training and practice. A commercially available virtual reality simulator provides clear visualization, but the haptic feedback for drilling is lacking. Trainees still must practice drilling on cadavers and patients. To provide a better and more accessible training environment, we have developed a low-cost, practical surgical simulator specifically for drilling in the expanded endonasal approach.