2x1 building blocks
thingiverse
My little brother has outgrown simple building blocks, so I created a system of connectors for 2x1. Most blocks can be printed without supports, but it's best to print them solid to prevent breakage. Once you've printed all the pieces you need, cut some 2x1 stock into the desired lengths - three inches, two feet, and four inches work well. Then, start building!
Download Model from thingiverse
With this file you will be able to print 2x1 building blocks with your 3D printer. Click on the button and save the file on your computer to work, edit or customize your design. You can also find more 3D designs for printers on 2x1 building blocks.