I promised earlier in this thread a list of resources comparing hull materials. I will post that later today... i hope.
MoonRise and others, I would love to see photos of good and bad welds for boats if you can provide um as I hope to spend a few years practicing before i start my boat. PLEASE let me know what to look for? how deep of a weld? How do i keep air and water from getting trapped between welds? When do i weld both sides of a joint and when do i weld only one? What is the best way to remove oxidation? Is these a little welder that is portable and can be used for repairs when at random harbors in other countries? What bad things happen if i have a repair done in a small port papua new guinea or some little island in the pacific and the filler material is the wrong alloy? (this bothers me and makes me think the best alloy is the most common one not the least corrosive)
I hope these weld questions are addressed by the Boatbuilding with Aluminum (Hardcover) by Stephen F. Pollard book. Those that have read it, is there a big difference between the 1993 (ed1) hard cover with gray color version and the 2006 soft cover with the photos of the AL boat? If there is additional info in the new version i will buy that, but i found a deal on the old one. In addition to welding sections i am particularly interested in the self jigging design section and the sections particular to sailboats and keels.