coroplast can be obtained from your local democratic and republican parties. Their signs, you john Kerry for..." are typically owned by the parties but unless John Kerry is running for the same office in the same year as last time the signs sort of expire. Also beer and soft drink distributors many of their signs are made of this stuff.

And yes you can save money building this way. I bought a 4'X8' sheet from a sign maker here in town for 20.00 and a 4" pvc rain spout a few bucks forget how much but it was 6 ft long, some nice straight yard sticks for spars and doublers and scrap 1X4 for firewall and I had three 40 size coro-sticks. so unless a guy can get me three sticks for 30-35 bucks or 10.00 each well then savings occurred.

A part of the SPAD culture is to try to build the best plane for the least money