Yes, you can use the Amana bits. I ve done it with the
RC-2250 . But note that they re technically specified for CNC. If you are going to use it in a handheld router, I would absolutely do so in a sled, being sure to take light passes and going slow. If you re going to count on your hands to be the only thing to control it, it may be a recipe for disaster. My sled has dados cut into the sidewalls which the sub-base rides in which helps hold the router down.
If you don t want to drop ~$200 on a bit, you could always go with something
like this
It will work, but the downside is that when it goes dull you ll either have to buy a new one or have it re-sharpened. at this price, it s essentially a disposable item. The benefit to the Amana is if you re going to be flattening a lot of slabs (or repeatedly surfacing the CNC spoilboard) so that you can just replace the inserts.
And to answer your question: a spoilboard is the surface on the bed of a CNC router (or other similar machine). It maintains a flat surface, but doesn t damage the cutter if you re making a through cut on a workpiece. In so doing, it can get light cuts in it, thus "spoiling" it. Instead of replacing it you use one of these cutters to shave off the top and restore it to flat.
- EdDantes