I make my bolts out of hard maple, 21 1/2 inches long, bodkin point, that come in a 38 grams total. I use lead shot in the tip to get them all to within 1/4 gram variance.
I use a Veritas doweling jig to make the shafts which produces a 3/8 in shaft after sanding. I finish them with 2 coats of linseed oil.
Graylings makes an excellent fletching jig that comes with plates for 2,3,4 flights. It's super easy to use, and very accurate, with adjustments for spin as well as adaptors for nocked or blunt end shafts. The best $25 I have ever spent. I am using thinned down gorilla glue, which works, but is still really goopy.
Right now I am using store-bought feather flights, but I am experimenting with parchment (very thin and expensive) inserted into slots. Thin wooden flights are next.
Hope this helps,