A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
From: Geoffrey Kolbe
Date: 2021 Feb 14, 22:33 -0800
The best book I found for the theory of astrolabes and how to build them was "Practical Astronomy" by W. Schroeder, published by Werner Laurie in 1956.
You need to use the largest piece of paper you can find to draw out the projections so you can make an astrolabe of useful size. The astrolabe I made in the photo below is about five inches across and I needed two A3 pieces of paper taped together to make that.