I use a CA finish on laser cut pens because you need the CA to flood the joints to hold them together and if you do any sanding at all, the dark dust gets in the pores of the light woods. I use a CA finish if I have a very pretty piece of wood that is punky and I want to stabilize it. I've done that recently with some really nicely patterned mesquite that I wanted to save but the grain was brittle. I saved it and it looks great. Those are about the only times I use it. I'm one of those guys who doesn't like the look and feel of a CA finish. I normally use PensPlus friction finish. I know it's not going to hold a newly finished sheen, but I don't want it to. I want to be able to feel the grain of the wood and see the patina change after I've used it a bit. But that's just me.