I am working on a thing (really, I will write up some projects soon …) that involves a 1/4” bolt going through a hole in a piece of Baltic birch (on a regular basis for the expected life of the object). The 5th time, one of the bolt threads hung up a little and splintered a chunk off the top layer of the plywood on the egress end of the bolt. That was … disappointing.
It occurred to me that there is almost certainly some sort of a sleeve that can go in a hole like that to stop that from happening. It seems like that would be a fairly common need. After a bunch of STW around that general concept, I have found obscure things in the vicinity (e.g., http://www.nyltite.com/headed_sleeves.asp ).
I could also cut lengths of some sort of tubing (aluminum? brass? Plastic?) with a 1/4” inner diameter to fit and glue them in a hole.
Does anyone know of the proper name for what I am describing? Or know a better way to approach this?