Well, I regret having to write this. It appears that a certain well-known manufacturer of building blocks is not fond of people creating items similar to, or compatible with their product and is requiring makers to take down their models.
While it is in their right to disapprove of how their trademarked name is used, it seems to me that, given the plethora of other compatible building systems, they should not have the right to take down items compatible with their bricks.
However, as I do not have a legal team representing me, I regret I must take down my object.
My kids will still enjoy their toys, but this leaves me saddened.