Plane across the grain to take the thickness down to close to final, leaving about 0.5 mm depending on tear out.Sand or scrape the last part smooth. 

@liebe hey Dan, thanks a lot. I ended up plugging the hole and just going down to one pickup… this was my original plan to begin with so not worrie. I’ll just cover the pickup hole with a pick guard

I found also in books of lutherie mentions of these toothed blade, I’ve never used them, but maybe I will try.
Thank you @russ

@mario Hi Mario, Sounds like you are doing all the right things. It is just very hard work doing it by hand with a plane. Rosewood is renowned for being difficult to plane because of the high risk of tear…   Read more»

Hi @somethingnicer, I’m presuming you’ve drilled the hole for the switch, but not routed out the cavity for the switch and that’s what you’re wanting to do next?  You are pretty close to the edge. It’s not ideal, but if…   Read more»