I've just done a bunch of inside beaded corner round and outside corner trimming for my basement reno. Mainly 90° corners around whiteboarded-in utilities, built in cabinet, furnace cleanouts, closets... Its spruce shellacked, primed and twice painted with semi-gloss oil.
Naturally I will I will be sanding the misaligned outside planes where the edges don't quite align. I've got the odd split at the ends due to the nails and may need to chisel out the splinter and reface if the little glue I snuck in doesn't hold and I can't sand and fill it flush without chiseling a notch. I've got to fill the set finishing nail holes too. These may be in the same region as the repairs, otherwise I wouldn't mention them; I'd just use poly, or filler if I have some ready.
I have the gaps at a lot of the corners. They cannot be ignored. You could put a match in one corner. Others aren't parallel. What do I use to fill these fitting errors in so that they will not crack and fall away. I will paint over any repair that I do. I have heard of the use of caulking around casing, possibly to fill the gap to the wall . Is this what I need to use? I have never used caulking for anything other than sealing gaps around windows, water spouts, electrical etc. What type do I need (e.g. latex) and how do I apply it and when do I work it. Does it need to be specified as paintable &/or should it be white in the first place?. If it were like silicone I cannot see working it, it is always springy and won't make or form a shape that I know. Do I need to let it set a little and go back and work it, and with what kind of tools? Do I need to use the slippery finger technique? Can it be cut with a razor blade, sanded? Is it gonna be good, or should I stick with woodfiller or poly and hope for the best? BTW I will also be doing four doors and four windows with all the casings in a matter of weeks. Same thing? Actually I HOPE these will be better, and I can just use some poly. The trim is twisty and isn't backed the same as the casings will be. More finicky, and I didn't finnick too much.
Polyfilla or the like I can only assume isn't flexible enough and will eventually crack, and you can't use fiberglass paper in the limited depth.
Bondo is great but I can only assume it isn't flexible enough and will eventually crack. Dries like JB Weld, no!?
Wood filler, or glue and sawdust I can only assume it isn't flexible enough and will eventually crack. Dries like JB Weld, no!?
Thanks mucho in advance. I'm gonna need a solution soon.