I you are referring to a semented spiral
When I first started turning I was guilty of reading tutorials. When I realized it inhibited the thought process I stopped that transgression.
Ant way since you didn't mention what kind of segments you are referring to I wrote a couple of "tips"( not a tutorial)
There is an article on doing them on the home page
http://www.penturners.org/content/segpen.pdf
I use a jig that I make up each time I cut segmented blanks.
I have found that there are a few key things to remember and a couple of tricks.
The first is the stock must be squared with glue joint surfaces.
the second is any time you need to sand you run the risk of throuwing off parallel surfaces thus throwing off the "line" of the blank.
I use a table saw to cut the pieces. Glue jopint surfaces every time.
One important thing is to draw a line along one edge of the stock before I cut it into segments.I uses a sharpie with a distinctive color.
This helps me refrence the pattern.
The jig I make each time is out of "Breadboard plastic"
When I set up the TS to cut the segments I rip a strip of the plastic the same width.
This gets brad nailed to a flat piece of wasted stock.
The bottom secton pieces get beveled and pinned with a 90* recess for the bottom segment.
I glue up the first two segments carefully centering each to get the "points" centered and equally spaced.
I set that in the recess and brad nail a strip that aligns the subsequent piecees.
Clear as mud huh?
If I can find the last one I made I'll post a picture.
