I've made two Dobsonian telescopes - an 8 inch and a 12.5 inch.  For those who don't know, a Dobsonian telescope is a popular mount design for home made Newtonian telescopes.  John Dobson invented the mount design. The unique feature of the mount is its simplicity and ability to support large mirrors.

When I made the first scope, the 8", I kept a journal about the mirror making process, from rough grinding to polishing and parabolizing. The journal is posted here...