I press drill bushings into 3d printed trim & drill jigs all the time for work. Most jigs last a few cycles, unless the drill bushings heat up from improper drill angle, clogged chips, or a really deep hole that causes heat buildup in the drill bit.
For high temp lamination molds I’ve used Ultem For 250f+ cure cycles for carbon fiber/epoxy prepreg. I’ve made dissolvable mandrels for complicated bifurcated ducts and all kinds of cool shit I can’t show pictures of.
I’ve even made quickie changes to wind tunnel models leveraging 3D printed bits. There was a fuckload of filler, primer, and hand sanding, but fuck, it’s a fast solution in a pinch.
Also made some 3D printed D44 knuckles to proof a billet concept…