First of all i’m not interested in such grinder, but it’s important for you to understand that since your first post, you created some doubts, probably you are honest but only just with poor experience in sales?
You are “building” your version, but you posted 3 different versions photos/drawing ( i can recognize 3 different Allen bolt on the upper burr flange), i personally suggest you to publish some specs and of course photos of your built version.
As you understood, in this forum there are people with sufficient information/ knowledge, as well about the Mr. Zhang story and his venture with the american guy ( Levercraft Ultra), not a secret how it’s ended.
Actually the “Mr. Zhang” original design has been “replicated” by others, no problem, some has get enough reputation to gain the customers confidence.
I do believe that if you want to build your reputation, aka gain the customers confidence, at least you should release precise and complete information.
Introducing you as a “coffee grinder maker” and then offering to sale a product to being self built like an assembly box, it’s weird, as well you start with a price of 2400 $and then you immediately, theoretically, accepted a discounted price of 1800$ for the forum members.
You are in true asking to potential customers to blindly trust you based on unclear information, and at the moment nobody really understood who are you, the company owner, the company engineer, a sales agent, a private person with connection with some grinder company and the capability to arrange for export from China?
If you can’t provide more info based on your own decision, it’s means you are not “the coffee grinder maker”, nothing personal, i hope you understand my thought,