Originally Posted by
eddieC
I haven't had luck with CA and ply either.
Last year, I had a profile with an OS 70 4-stroke that the area ahead of the leading edge started to delaminate from engine vibration, a common profile complaint. I pried it apart a bit, dropped some microballoons and medium CA in and clamped it quick. It still came apart.
I'm probably going to add 1/8 bolsters on the sides and pin with several dowels. I hate to add the weight, but the other option is to 'bin it', as the Brits would say.
*I* think you guys need to do some better prep work. Use a woodpecker on both surfaces to make little spike holes that the CA can wick into and set up in and your bond gets stronger. Oh, on some of the infrequent times I use CA I have been known to use baking soda to set it off and to build a hold in place structure, but I don't think I recommend it.