There are plenty of table saw sled designs, here and elsewhere, on the Internet. A sled is an excellent addition to your table saw, and is usually intended to make precise 90 degree cuts. But occasionally you need to make a precise angled cut, as is required if you are doing segmented wood turning on a lathe. This Instructable shows you how to make a sled to make specific angled cuts on your table saw, more precise than anything you can buy for US$300.
Layout drawings in Imperial units are provided in the steps; layout drawings in Metric units included in step 7.
Step 1: What do you need?
The sled will be made from 3/4" MDF.
You will need a precise measuring rule, a good framing square, a drafting triangle and a sharp pencil. A magnifying glass will be a big help also.