ORIGINAL: Campgems
OK, another trick. I hate CA, I always get to much on and have these razor sharp fillets that you just can't sand smooth without cutting the balsa away around it.
I used to be a jeweler and one my ''tools'' was craft sticks, IE popsicle sticks'' that I glued wet or dry sand paper onto. I started at 280 and went up to 1000 grit. I could use an Xacto knive and cut them to thin strips and modify the sides for getting into tight spots.
I was working on a 4*60 and Sig recomends Ca for just about everything. Come time to cover, there were enough knife egdes of Ca to make me question if the covering would hold up. I tried garnet paper and other stuff and was successful in screwing up a couple ribs in the process. In frustration, I grabbed a 320 grit stick and what a susprise, It eats CA. It is also so fine that it really doesn't do much damage to balsa unless you dig in an edge. They make a great little tool to get into the tight corneres and cut the CA back to where you want it and round the edges.
Just take a sheet of wet or dry and lay it face down on some news papers. Spray the back with some 77 adheasive. Don't skimp. Then lay out the craft sticks in a nice pattern for best coverage. Press them down tight and then the next day, use your Xactor knife to cut the sticks from the wet or dry sheet from the stick side. As long as you cut from the back, you can shape and taper the stick as needed and keep the wet or dry active right to the edge. When the edge gets a little worn, put it face down on some scrap wood and cut a new edge on it. A great and inexpensive tool to sand the tight spots and clean up the hardened CA. They don't work on Epoxy though.
Don
Very nice! Thanks Don. I will be using this tip as well.