So the first lesson is up. It will propably be rather boring for most of you, but if we combine our ideas we will maybe end up with a good manual how to build a DS12.
http://www.gust.ax/gallery/2008-02-10/08-03-10/
<img src="http://www.catsailor.com/forums/images/graemlins/blush.gif" alt="" />

is there a list of materials you have available?

(for example, the dimensions of the ply?)

You will need 6 sheets of 3-4mm Okume or Gabon ply for the boat, and another one if you are thinking of making the mast yourself, guess there will be a drawing for that later if everything works out all right. 4 meters of alu tube for the beams. Then you will need some epoxy a wild guess 5 kg to make hulls, rudders, foils and mast.
Some micro fibres, foam blocks, E- glass for the deck, and a good quantity of carbon for the mast.
You will have a bill around 1000 euros for the material maybe less.
Sails and battens you can get from Singapour for about 250 euros.
I will start to post material used, costs and number on hours spent on the cat on my blog.

So here comes lesson 2 and 3. About 9 hours of work so far.
http://www.gust.ax/gallery/2008-02-10/08-03-11/

Hopefully you have done your homework, here is another one:
http://www.gust.ax/gallery/2008-02-10/08-03-23/

Number five: http://www.gust.ax/gallery/2008-02-10/08-03-18/

Lesson number nine is up. Will be sitting on a ferry all Monday and hopefully get some time were there is not a lot else to do so with a little bit luck there will be more after that.
http://www.gust.ax/gallery/2008-02-10/08-04-04/