This is NOT the Block-26, only discs. Unfortunatley the actual Block-26 is an allusive model to find. The only site that has the actual model is in Chinese and is rendered useless when translated.
The designer of the Block-26 is also very allusive andcontact information is difficult to find, or at leastdiscern what is real and what is fake.
The creator of block 26 is BoBoInnovation, the reason its hard to find the design is because of the licensing permissions where he doesnt want people to replicate and upload his hard work.
People on here have very kindly respected his wishes. If you wish to buy the design it looks like its on etsy right now.
https://www.etsy.com/ca/shop/BoBoInnovation
As I said, there are a lot of "spoofers" of BoboInnovations so it is hard to find what is reaal and what isn't. The Block-26 is a recent addition to his Etsy.
And I do understand not wanting people to profit off other's hard work. That's why I and my wife pay for commerical licenses for products that we wish to sell and support designers either directly or through their patreon or MMF accounts.
Thats excellent, its good to support smaller designers. I mostly wrote my comment for people reading that may not be in the know and wondering where to get the design or why its hard to find.