mistystarz wrote:I have not mounted the top one as I don't understand how to . The one on the bottom looking down has a hole similar to a drill chuck . I am trying to figure out how to use router bits I have ,they are shop smith and they have a hole in the center...am I missing a part ???? o_0
to use the top mount, you need to have a router motor that is removable from its base. only the motor part goes into the upper mount. the upper mount will fit a range of diameters of the motor (the diameter of the part that slides into the router base). if your router motor is not in that size range, you will need to get an adapter. the manual will tell you what that size range is. be very careful that you get the right manual. SS customer service has been known to get this wrong. check the parts list in the manual against your hardware to make sure.
the router chuck has a similar function to a drill chuck, but it has a very limited range of adjustment. router bit shafts come in a very limited number of sizes (1/4" and 1/2" being most common in USA). you MUST have a collet for your router chuck that matches the router bit shaft size.
as pennview implied, router bits do not normally have a hole in the center (at least, not when fully assembled). if yours have holes, then they may be missing parts (like screws for guide bearings) or they may not be router bits.
there are speed limits for larger bits. having one shatter can be a memorable experience.
as others have mentioned, pictures of the parts that you are wondering about are a good way to help the knowledgeable folk here help you.
lest I forget, that is one nice looking tool. it looks like it should serve you well.
Ivan