No, I was involved in the design phase, and I'm doing the crossover so I made the measurements. The CAD work was done by someone with expertise in multiple areas, he also oversaw the manufacturing of the waveguide and did the final assembly of the parts. The 3D print was done in powdered carbon fiber using a process called "laser sintering".
I can put you in touch with him if you'd like, but just so you know, this was not an inexpensive project.
Thanks for that kind offer.
I'm pretty sure if I go the printed horn route that I'll want to get a printer and wade in to it in DIY fashion. I truly enjoy every step in the DIY process ... the design, building protos (over and over haha), measuring, and implement processing/xovers etc.
Building the final proto version for stereo or LCR, often feels anticlimactic, and seems more like work.
You won't see any MEH tech in it though. Dr Geddes does not hold it in high regard, and very much does not see it as the 'best of all worlds'. Not for home audio.
That's a pity. I'd love to see his audio intellect help refine the synergy concept into a better horn/waveguide than conical.. (Perhaps though, since commercial interests might be in play with anything he works on, patent infringement could be a show stopper from the gitgo...wild guess.)
Doesn't really matter though, as too many people have heard synergy designs, be they Danley's commercial boxes, or DIY one-offs. There's an ever increasing crowd that realizes MEHs are not just the province of PA, but may in fact be the best full-range co-axial implementation currently known.
A lot of really smart folks are trying to use advanced waveguides for MEHs........for home use

Folks who have already mastered good designs similar to the Summa etc..
Personally, I think MEHs need to be big to reap their main benefit...full-range integration that extends lowest frequency of pattern control.
So far all the "advanced waveguides used for MEHS" designs I've seen have been relatively small. I figure due to 3D printer size constraints and costs of large prints.
I'm not so sure this has any advantage over a well done co-axial like from KEF, or good waveguide-over-cone builds like from Genelec, Neumann, Geddes, etc.
I think every driver section above the subwoofer handoff needs to be incorporated into a MEH for best of all worlds results.
Anyway that's just me,.... my thoughts / speaker preference ....which means no more than Geddes, or yours, or any other person's does.......
.......or the even general population's mean preference (ala Harman).....