I've been using simple adjustable rods from my first build and don't think I'm going to change that. I still have my first mandolin and never needed...
Agree with Greg.
You may want to steam the dent before filling. Have a look at frets.com on repairing dings. Frank mostly fills with thickened nitro...
The posts are standard hardware store item. Search for allen socket set screw 5-40 thread. You will probably have problem fingd them in small emough...
It is possible to cut curved slot on nut. It's not flat and not parallel to anything (at least on the instruments I worked on)
You need to shape the...