For a one time dent removal I suggest that you should send it out and pay to have it done. Should be able to have it done for less than $100.00. By the time you either buy a dent remover or make one you will have far more than that into the job. Plus you will have someone who has done many before and get the benefit of his experience. Now if you had four or five dents to do you would have to try it yourself because most smiths charge per dent, not for the entire job.