> I am just beginning construction of an expedition single. In regards to
> the wood used for the forms, is it necessary to use plywood, or can I get
> by using chipboard as the form wood material? I used OSB siding for forms, it did not hold staples worth a damm, after about five rows of strips I pulled them all off and coated the edges with epoxy. They drank up about 3 oz. with no drips and probably would have taken more, and they did hold the staples after that. The OSB was salvaged from a residential housing project so the cost was perfect.