I decided to make a cutting board with a curved "inlay" (through stripe, actually). I routed a groove, cut it apart on the bandsaw, then tried to use a flush trim router bit to clean up the edge, per youtube videos. As soon as I started the bearing on the router bit blew up. After a few choice words, I said "Hmmm, I have a shaper".
I set up the shaper as shown in the picture, with a rub bearing underneath to follow the edge of the groove and then a big flat cutter to trim the edge. The cutter and bearing are the same diameter, just like a router flush trim bit. I used piece of particle board to raise the workpiece so that my bearing wasn't hitting the table. I figured it would be much like using the flush cutter in a router table.
As soon as I touched the wood to the cutter there was a loud bang, with flying chunks of wood. The second picture shows the result.
Obviously I did something stupid, but I'm not sure what. I'm not anxious to repeat the experiment! Can one of you with more experience with a shaper educate me as to what I did wrong, and what the correct way to do this might be?
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