Thanks guys. I have been looking at the many different brands and they seem to run between $150-$300 for the new ones. I cannot tell the difference between the the $150 and $300 models by the descriptions in the ads. They all seem to use a neoprene sleeve with split driving plugs. I put an ad on craigslist for a used one. Stuart I would love to do the machine shop class, if only I had the time!
Thanks Jason