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I don't see where that would hurt, but the last time I used CA on brass it turned it green. The other option is to take some fine sandpaper and smooth and de-bur the ferrules where the strings pass through, just to be safe. As an added precaution, you could drill the holes the same size as whichever ferrules had the smallest, and drill the recess for the ferrules only deep enough to seat them. That should re-enforce that area and help keep the strings away from the edges of the holes in the ferrules.

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Mike

The only thing nescessary for evil to thrive is for good men to do nothing.

Eggs-actly what I was thinking, Mike!
Also thought if you drilled the small holes in the top ferrules, the o.d. of the tube,
you could bottom the tube onto the cups, then come slightly through the uppers through the hole you drilled.
So filippo, the upper ferrules are going to have the strings ramp on the edges of them,
then go over the wood stop, then over the beautiful bridge you made?
I went to your build thread to see what yer up to.

I am not sure if there is any kind of tube you can add after you already have the holes drilled.

Best way to get the strings in that I have found is to look straight through the hole from the back and you can slide the string into the light on the other side.

If you find a way to put some sort of tube in there to make it carefree stringing please let me know cause I would like to update my daily player.

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John Thiessen
http://www.iszacguitars.com