DirtySteve
Ambassador of Hold My Beer
If you drill shallow holes in a straight line then clean it up with a chisel you can create the space for the screw poles.
It wont be pretty and perfect, but it works; I have done exactly that.
This thread made me break out my P90 guitar - an LP type AXL thing I built out from a bare husk. Gibson P90 Treble (bridge) pickup. I found some frets had lifted along the bass side of the fretboard.
(I didn't need to drill those holes on this guitar)
So, it sat until this past weekend I glued them down, but a couple did not sit perfectly tight to the fretboard.
I did another round of fret level and crowning. Came out great!
The pickup sounds great, but I don't recall what it ohms out at. I think in the high 7k range.
Bought it used, don't know the age.
The strings were a bit old and the intonation was a bit off. I considered getting another wraparound bridge with adjustable saddles, but after string change, it is almost dead on.
I wanted to use this guitar for my Punk submission, but it was out of service at the time.
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That's a slick looking guitar!
If want to try the AVT-II bridge I took off of mine I'd be happy to send it to you.