Robin I used polyurethane wood glue, the 30 minute type, it expands just enough to fill any gaps, although you have to remove foamed up bits before you sand otherwise they break off and gouge out the foam spoiling your day. Remember to wet the wood slightly, it acts as a catalyst, I use a garden spray bottle. I tried builders gapfilling foam in an aerosol, however it expands so much that it can distort the spars, especially on the horizontal stab (bitter experience!). The big advantage over using epoxy resin is that it dries in 30+ minutes on a warm day, so you can get on with things. Peter Drake ----- Original Message ----- From: "Robin Macdonald" <r.macdon...@clear.net.nz> To: "KRnet" <kr...@mylist.net> Sent: Thursday, January 14, 2010 7:45 PM Subject: KR> Glueing Foam
Guys, I am in the process of glueing the foam to the spars, wing leading & trailing edge, tail feathers, etc. I have made the main wing planks in a sandwich & they are floxed in placed. Now I want to do the leading & trailing edge & the tail feathers. What is the preferred process to attach the foam to the spares etc. Some have used resin, & I understand some have used a sprayon 3M product. If resin is a preferred process what mix have you used. straight resin, resin & micro, or what do you suggest. Much apprecaited for your reply Robin NZ _______________________________________ Search the KRnet Archives at http://www.maddyhome.com/krsrch/index.jsp to UNsubscribe from KRnet, send a message to krnet-le...@mylist.net please see other KRnet info at http://www.krnet.org/info.html
