I wanted to bump this thread with some photos (for those who couldn't make the convention) as well as some details that I found online. This shop visit was one of the highlights of the trip for me. Roy's dedication to the project (25 years and counting) is impressive to say the least. Thank you Roy for taking time out of your busy schedule to show us around!

Just like the Minden photos, I have placed them in an infinity scroll with decent quality pics on the main page. If you click on one of the photos you will launch a light box view of very high quality images - which you can scroll from photo to photo with arrows:
Willow Aircraft Photo Scroll
The long narrow room at the end of the scroll (with the covered wings) is a like a cigar humidor - climate controlled curing before being installed on the birds.

Roy has had to overcome many hurdles in duplicating the old Boeing designs - and has actually tackled several different 'Types' from the older to newer specifications, to the Civilian, Navy and Army variations, as well as a two-place design ordered by Howard Hughes:
Roy Rehm June '22: Howard Hughes' 2 seat B100

One of the Navy variants is apparently headed to the
Allen Airways Flying Museum.

The pace of the project can be gauged by looking at what others have posted on the internet. Here's some photos from a shop visit by the Experimental Aircraft Association circa '16.

Compare that to video shot during Kermit Weeks' visit in 2018:



Apparently Roy had originally intended to deliver one aircraft after another - but as he got into the build details - it didn't make any sense to break down tooling/jigs after making just one major part. The result has been an elongated timeline for anyone awaiting delivery.

But as we can see from the photos & video it will certainly be worth the wait.