Neck Mounting Ferrules

very slick appearance to a finished bolt on.

These are nice little pieces, but they are not 5/8" in diameter. A 15mm Forster is the way to go for a nice tight fit.

I recently built a bcustom Hot-Rod for a friend's son for Christmas. StewMac's neck ferrules went on in place of the neck plate. This went so well, I'm incorporating them into the building of all future bcustom instruments. I did find out something the hard way. The 5/8" bit appears to me to be too big. I did mine with a 9/16" spade bit and hogged out the rest with my trusty Dremel 395 and the large sanding drum.
This makes the ferrules a press fit. They don't fall out of the body if the neck is removed. The 5/8" hole allows them to shift around, and looks loose to me. But, it's a huge difference. I learned something else. A small hole in the body from the factory, gets covered by a neck plate. I plugged it with ash dowel and sanded it flush. Hole is now undetectable. So I've got neck plates for sale if anyone wants one.

I really like these ferrules but the spec calls for a 5/8" counterbore. Unfortunately this leaves too much extra space for the ferrule and shows gaps when the ferrule is in place. A 9/16" counterbore is too small so if you have a grinder and a caliper you may want to grind down a 5/8" spade bit to the ferrule dimension for a nice clean fit.

They are good for wood screws and the finish is great quality plating, but I am in search of ferrules for machine screws and the head angle doesn't match. :(

Really great ferrules for wood screw neck joints, though!

The ferrules work great as replacements for a bolt on plate. They allow you to contour the neck joint more than a plate does.