1/32" edge strips

Have you thought about making a die and extruding lengths of material instead of machining it?

Good idea. I actually have contacted an extrusion company, but haven't heard back from them yet.

I don't know anything about extrusion do-it-yourself style. Is it reasonably affordable? Can you point to a good source?

I can only think of how I'd do it myself, based on my experience pouring hot aluminum, and working with jeweler's metals like silver and gold making centrifugal castings.

First, you'd need a source of hot plastic to extrude - the type of material you require will dictate what sort of hot-pot you'd need. The simplest way would be a hand-pumped pressure vessel filled with hot plastic, and having a valve/die at the bottom of it. YOu could mechanically pressurize, or better yet use compressed air or nitrogen - some gas that won't affect the properties of the plastic.

You could probably build such an apparatus to operate electrically - again - depending on the plastic you need to use and how hot you need to get it.

Second, since you're handy with a Bridgeport I'd think machining your own die would be easy for you - in fact, if you do have an extrusion company lined up you may want to ask them for some tool specs and machine your own die and send it to them - I'd think that would save you a LOT of money.

Remember that you need to adjust the dimensions of the die to account for the shrinkage of the material once it cools to insure you get the proper final dimension on the finished stock.

...looking at your drawings again, another REALLY easy thing you could do is make a series of draw plates - like progressive dies - to cut lengths of strip stock down to the dimensions you want. That's really the easiest thing to do, now that I think about it...and the most precise. I'd make them from stainless steel, mount them to the ways of a lathe bed, and use the lathe carriage hand wheel to pull the stock though, with a small machinist's vise mounted to the carriage in place of the tool head to grab the stock. Square dies would be easier to make than round ones, and you could even make them adjustable to any dimesion you like...yeah...I like this idea much better...

Of course, I'm assuming that if you own a Bridgeport, you also own an engine lathe?..

Yes, I have access to a lathe as well. I don't own the Bridgeport and the lathe, but I have essentially unlimited access to a very well equipped machine shop. Making a dye would be very easy, indeed.

I googled draw plates (learning something new every day), yeah, I guess that would work.

I also found some edge trims at McMaster that have a 1/32 gap - will try those as well.

Fantastic!