Print model consisted from many parts (bricks) directly is little complex task. Think, you need export model from LeoCAD in some 3D mesh (obj, stl or 3ds) and t

Print model consisted from many parts (bricks) directly is little complex task. Think, you need export model from LeoCAD in some 3D mesh (obj, stl or 3ds) and then need make some optimization (remove hidden faces, etc.) But there is "ImportLDraw" addon for Blender, so its better create feature request to its developers https://github.com/TobyLobster/ImportLDraw https://github.com/TobyLobster/ImportLDraw