I have found a cheap source of scale plywood as well as some preformed shapes that could be used for modeling.The largest pieces of plywood that I have found so far is the size of a standard tissue box.It is first quality clear wood about the color and consistency of basswood and It is available from about 1/64 to 1/4",some is quite stiff and some really pliable .Some shapes such as small bird houses or boxes make good starting points for scratch building or can be torn down for sheet plywood.I have also found some pretty nice dowels but no actual scale lumber yet. Cheers!
Once Upon a time.........
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http://s6.photobucket.com/albums/y250/JohnReid/
I am a man of few words but lots of pics
I quit drinking beer because the download was taking longer than the upload !