One of my pastimes is fly fishing and over the years I have built a few fly rods.
You start with a “blank” usually 2 or 4 pieces. You find the spine (or spline) and mark it as this is what you line the guides up to. The guides are spaced according to the rod length and number you use.
Next you epoxy on the reel seat and then file/rasp the cork handle inside to fit snugly over the blank and epoxy that in place. Next you tape the hook keeper and guides in place and start winding thread over them to hold them to the blank. I like to do decorative “trim bands” either 1, 2 or 3 wraps of silver to break up the winding a little.
Once all the guides are wrapped you make sure they are aligned and the blanks is placed in a rotisserie and turned while you apply epoxy and let it set.
I count the wraps before I start the first trim band, then the number between them and then the number before the wrap climbs the actual guide - just so I know it’s going to look even!
My latest build is ready for epoxy on the guide wraps.