Here's how to make the tuning pegs for your Banjo. You can skip this by buying commercial violin pegs or by getting machine tuners from junk or new sources. Some people use eyebolts or other hardware store items, but I prefer wooden pegs.
Here's the stuff I used to make the banjo with the octagonal body.
Those pegs are roughed out blanks. You can see the fractal pattern cut by the very abused bandsaw blade.
I sawed and whittled the pegs from a scavenged coffeetable leg. I shoved them into the holes in the drill guage to make them them round and get the taper right. The three circled holes are about right for base, tip, and middle of the peg.
That peghole reamer tapers too much and isn't straight. After tuning a string you have to shove the peg back into the hole.
For the next banjo I started over and was a lot more careful making the reamer, shaver, etc. The extra care saved me time and the result was better too. But by all means make your first banjo in a hurry,
you'll learn a lot by finishing it. So get it over with and start playing that one while you start your next one.
That's a chunk of fret wire around the rest of the stuff. It cost $5 for 2 feet at a music store.
I ended up liking the fretless sound and haven't fretted the neck yet.
The virtue of laziness must be overcome. I'll fret a neck in Part 5.
Enough background, back to my current best method for making pegs!