Welcome 34-40,when you can please post some pics of your mill and maybe share how you come across it.One of the many things that makes Hobby-Machinist website fantastic is posters like yourself and the membership that helps us through and learn today,tomorrow,or whenever.Myself I know nothing about how to use a mill or anything about end mill holders or cutters.What I would like to find out is if I can get by with only one mill holder say a 1/2,then purchase end mills of different sizes but with 1/2 shanks.Learning as I go-----kroll