More generic gridfinity

Just more generic gridfinityCan be printed on regular 220x220 printersBase can be expanden, just print the connectorsOuter dimensions for the box is 47x47x53.5 and the squares on the base are 42x42*ps. the boxes in the picture are not the same as the one published, those were prototypes, there is not that much of a gap between them and should sit flush next to eachother