Originally Posted by
PaulFLUS
Either can be done successfully. I just personally prefer epoxy.
The nice thing about epoxy is it is more workable. CA doesn't flow or fill in as easily. CA won't take dye so if the color of your patch doesn't match you can't adjust it with dye. Plus mixing it with any fibrous material is harder because it dries so quickly that it is harder to mold.
On the other hand. Epoxy looks more glossy than CA. Adding a fiber like saw dust helps but it is not as close a match as CA. CA has a more matte finish and if you do get the color matched right it is harder to recognize the patch, if that's your goal. For me a patch is like autobody repair. The goal is to not even see it has been repaired, like it was made that way.