My new Felder KF500 Pro has a shaper unit built in. I’ve never owned or used a shaper so I’m working my way through the process of understanding how to use it, how it compliments my router table, and the best source for cutters (Felder ones are crazy expensive)

one thing ive found is places selling bushings to adapt 30mm and 1.25” cutters. Is this a valid approach, or are adapters a bad idea? Any sources for affordable but good quality cutters to get started? Any specific approaches that are better or easier on the shaper than the router?

I’m also still not certain if my shaper unit can use router bits or not but Thinking that it can’t.

Thanks for any pointers to get to get me moving in the right direction.