[tadol]

Your takeaway shouldn’t be “hammer “ - it should be “tap” -

Using a mallet (block, hammer, etc) is a useful way to regulate the energy you put into the chisel - and it’s critical that the chisel be very sharp. But with the very narrow ledge you’re taking down, and the small amount you want to remove, you could even score the grain with the utility knife probably.

I wasn’t aware it was a hollow body - it looked solid to me. That would make one be a good bit more careful. And yes, taking steps to protect the finish would be highly advisable -

It’s not a major project, and I’m sure if you take your time and are careful it should come out fine. If you want big fun, try resawing the back off a LesPaul -

;-)