Very nice stuff!
So that Ultem can take those exhaust temps? I assume so or you wouldn't have used it. I can see how wedge adapters like that could solve a lot of problems for people.
Just noticed a new consumer level FDM machine that uses linear motors for the X-Y axis instead of the usual steppers and belts. Full closed loop positioning. Wonder if that's going to be a trend in consumer machines. By "linear motor" I mean it's a magnetic rail, like a railgun,
https://peopoly.net/products/magneto-x