That also comes in handy, If someones on a budget and needs a buttcap replaced. I've done a few where the finish chipped off where the sleeve met the cap, so when I changed them I had to either charge them to refinish the entire buttsleeve, and a posible rewrap or I could use CA. in some cases the cue is not worth a refinish to them, so I use CA to fill the chips on the edge, and finish the new buttcap with CA After I level the chips out. It is a skill, to do a good job though, one that may take some practice, but I've had successs with It.
On a stained buttsleeve, sometimes when the finish pulls away and chips those edges, It takes the stain off the wood too. A few times I have gotton lucky, and had a marker that matched the stain, Like a red stained cue I did this too, pretty common color to match if You have a good selection of different red markers, and when I was done You couldn't even see the repair had been done.
If you fill any craters, sometimes they will be alittle white around the edges. This doesn't always work, but if You use a really thin CA, sometimes will soak in under that white area and blend It in. I always used the thin as kind of a primer for that reason and others. You may have to fill, wipe, let dry, do it again until the fill is level with the finish. If You try to sand the finish down to the CA You used, then Your sanding the rest of the finish around the area off, so not a good idea to go that way.
There's alot of little tricks that are picked up from trial and error, so I don't recomend someone doing this on anything of value, unless they have had alot of experience at It. I'm not saying It can't be done By someone else, just that practice, not only makes perfect, but allows You to see trouble coming before things get too bad. Definatly practice on junk cues first.:wink: