Found a local Marine Plywood dealer in Chichester,NH.
http://www.goosebaylumber.com/pricelist.pdf
The two sheets of marine grade plywood for the dinghy would be $130. Standard ply would rund $30-40.
I now have two people interested in building a dinghy. Looks like building a jig would be handy. All of us agree to start the 1st after the holiday. In the mean time I'll make some stencils and a jig going by the free plans (D4).
If I still had access to a plotter I would have printed them up full scale.
The free plans have very little instructions.
I might order the plans that way I would have everything. It would might save some time on the stencils. I'll have to talk to the others.
Its only $40 plus shipping.
The purchased plans which is a D5 includes:
Plans Packing List:
Detailed drawings , large scale with all dimensions required to cut the sides, bottom and the bulkheads from flat plywood sheets: no lofting, no templates required. (How big is large scale?)
Full size patterns for the transom and frames. (Need a plotter for free plan )
Sail plans with all dimensions for spars and sails, marconi and sprit sail
Building notes including a detailed description of the assembly sequence and building tips
A Bill Of Materials (missing in free plan but online)
Help files reference list and more. (missing in free plan)
Looks like more info then the free plans.