It's been a few years since I first found this website. Originally, I wanted to build a Thien cyclone for a small Delta dust collector I had purchased. However, I replaced the Delta with a very large Oneida system that I bought from a friend who was moving and no longer had the need to build the Thien. Luckily, I recently had the opportunity to build a Thien for another friend who is upgrading a Harbor Freight DC he bought. Finally, I have a Thien build to share!
I also put together a YouTube video showing the construction of my version:
https://www.youtube.com/watch?v=JU0kFIw5Ye8