2 bit carves

Hey folks!

I’m running into an issue when cutting with two bits. I’ll try to explain so I don’t confuse myself.

Setting up project I use two bits, the fist is a 3/4” bowl bit and the second is the detail bit.

When the project has completed with the first bit and it’s time to switch out from the bowl bit to the detail bit (basically used to cut outside path of bowl) it runs the detail bit on the inside of the bowl removing the curved bottom of the bowl and making it a flat surface and then goes to the outside to carve the outside path. Make sense? How do I keep the detail bit from carving the inside of the bowl and ensure it only cuts the outside to cut out the project?

Create a second workpiece, and use each workpiece for each bit.