Ok setting the record straight.
I do make the Spir@l blocks,
Gemini makes a simalure but lot smaller block like the Spir@l block.
And D-tek customs makes the TC-4.
Now I can understand why this can get confusing, becaus all 3 blocks can be had from one place.
www.dtekcustoms.com
We (Dtek, myself, and gemini) did this for one reason, a kind of one stop shopping center. No matter what flavor you want, it can be had at one place.
Also, as for the clear tops, I love them. I am a form, and function kind of guy. I want the preformance, and the looks, call me greedy. now while a plastic type top will never ever ever be as strong as a soldered on copper top. There has to be something said for the way it looks, not only that, but to be able to take it apart and clean the inside. U know, to get all the growy stuff out if need be. Yes acrylic, and other plastics will crack. I knew this from the beginning. That is why I made extra tops. For the 1 st version, Dtek has about 30 tops on hand, and for the second version (just a small adjustment to the mounting holes for the top) I am in the process of maching more for replacements.
and NO, I do not make the gemini blocks. Peter at gemini cool does. But I am a front for OCWC

heheheheheheheh