Virgil; That foam is Urethane foam and was what most early KRs were made with.
The wing ribs as well as the surface are formed from this easily sanded foam. One caution I would advise anyone who uses this type of foam is to be SURE AND WEAR a face mask to keep the sanding foam out of YOUR LUNGS! Also this type of foam produces syanide (sic) gas when burned! My wings and most of the molds used on my kr-2 was created using this type of foam. Thanks P. Byington N54PB KR-2 Henderson Nevada [email protected] > On Apr 7, 2019, at 05:35, Virgil via KRnet <[email protected]> wrote: > > PVC Foam. Mid 70,s @ 0.25 par board foot, Virg > > On 4/6/19 10:41 PM, Oscar Zuniga via KRnet wrote: >> Netters; I salvaged a KR2 project that's about 20-25 years old that included >> all the "KR kit" foam board required to build the airplane. It consists of >> a stack of boards that are something like 18" wide by maybe 8 ft long and in >> two thicknesses. Color is sort of greenish and the stuff is somewhat >> delicate and lightweight. I'm not kidding when I say that you can take a >> piece of this board and use it to sand down another piece of the board. I >> have no idea what it is or if it's worth hanging onto. Anybody know what it >> is? >> >> Oscar Zuniga >> Medford, OR >> _______________________________________________ >> Search the KRnet Archives at >> https://www.mail-archive.com/[email protected]/. >> Please see LIST RULES and KRnet info at http://www.krnet.org/info.html. >> see http://list.krnet.org/mailman/listinfo/krnet_list.krnet.org to change >> options. >> To UNsubscribe from KRnet, send a message to [email protected] >> > > _______________________________________________ > Search the KRnet Archives at > https://www.mail-archive.com/[email protected]/. > Please see LIST RULES and KRnet info at http://www.krnet.org/info.html. > see http://list.krnet.org/mailman/listinfo/krnet_list.krnet.org to change > options. > To UNsubscribe from KRnet, send a message to [email protected] _______________________________________________ Search the KRnet Archives at https://www.mail-archive.com/[email protected]/. Please see LIST RULES and KRnet info at http://www.krnet.org/info.html. see http://list.krnet.org/mailman/listinfo/krnet_list.krnet.org to change options. To UNsubscribe from KRnet, send a message to [email protected]
