The trem I want to install in this old Fernandes needs to just a little more width in the cavity to function - the opening from the top of the guitar is slightly smaller than the main cavity, creating a sort of lip at the top (see photo looking from the cavity). I basically want to just remove that lip so the cavity & opening are all flush, in a way that doesn't look too bad (reasonably neat and low damage to the finish).
So far it I'm thinking options are;
- Sanding - slow but less risk of major damage
- Files & sanding - as above but a bit more efficient
- Dremel with barrel sander
- Dremel with router bit
- Proper router
I don't actually have any of the above so need to keep in mind what's needed vs reasonable cost for an occasional DIY'er. My trusty old dremel died so I've been wondering about replacing that anyway.
Curious for any recommendations or warnings etc
I realize I need to fill and redrill the trem mounting screw holes too which are disappointingly wonky.
Comments
If it was me I would use a scalpel to score a deep groove in the finish and the wood at the required distance, and then work to it with chisels and / or files and finish with sanding.
This should hopefully stop the finish from chipping further back although that’s still a risk.
But the real question is why do you need to? The lip is normal and doesn't usually get in the way
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