Castle - Modular Lego scaled interlocking

This is a project I have been itching to do for a while. I couldn't find what I was looking for and needed some motivation to brush up on my SolidWorks skills anyways. It is a collection of interlocking castle pieces that are all scaled to be multiples of Lego pieces. It obviously doesn't interlock with Lego, but should mostly match up with them. I included the CAD files in case anyone wants to modify. So far my (surprisingly careful) 3 year old hasn't broken any of them, but the tabs do seem like they could break if you get too carried away, though I'm not sure of a better way to lock them together. I sanded the mating surfaces down to help it slide together easily as well. I did need brims to keep from warping in the corners, but I suppose that will be somewhat printer specific. I also had to sand down the tabs on one piece to complete a full circle when assembling as it allowed me to push it straight together. This was something I didn't think of until I went to put it all