Getting further down my long road, I've been messing around with finishing possibilities on the Baltic Birch cabinets. These have Satinwood veneer and an experiment with coloring. Learned a few things, but that's kinda why I do it anyway.
I've always thought binding post cups were a compromise. Take a solid cabinet, cut a big hole in it and fill that hole with flimsy, probably resonant, plastic. Here's a solution I've devised to do away with the big hole and fit a decent binding post in the same hole a Tube Connector. These are Delrin bushings, a tough non-conductive polymer. I proud to say they're made in the USA, too. Delrin is actually a brand name, the generic name is Acetal.
Since the beginning, I've offered a choice of backs on X-LS, which means I stock twice as many backs so I can accommodate people's desires. The majority of flat packs I sell have tube connectors so this would give folks a choice and I don't have to cut and stock two different backs. I can see other possibilities for their use, but before I place a big order, I'd be curious to get feedback from the good folks here. They'd sell for $36 and are cut to specifically fit this binding post although they might fit others designed for 1/4" mounting hole.
https://www.parts-express.com/Dayton-Audio-BPA-38G-HD-Binding-Post-Pair-Gold-091-1245
