The clickfinity baseplates by James Boone are amazing [https://www.printables.com/model/719455-gridfinity-clickfinity-baseplate-w-connectors](https://www.printables.com/model/719455-gridfinity-clickfinity-baseplate-w-connectors), but they are not designed to be flushed with a vertical surface.

(You might also want to consider clickbase plates [https://www.printables.com/model/982173-clickbase-a-no-magnet-latching-gridfinity-baseplat/files](https://www.printables.com/model/982173-clickbase-a-no-magnet-latching-gridfinity-baseplat/files) since they are a good alternative to clickfinity).

These section baseplates allow you to create a perimeter of width 2 for a total of size of at least 6x6. you need an original clickfinity baseplate (see [https://www.printables.com/model/719455-gridfinity-clickfinity-baseplate-w-connectors](https://www.printables.com/model/719455-gridfinity-clickfinity-baseplate-w-connectors)) to fill the center (all edges should have female connectors).

For sizes smaller than 6x6, simply use a baseplate of the desired size.

How to use:

1. Print 4 corners
2. Print the sides according to the desired final size. Any length larger than 2 can be created with a combination of the 2,3 and 5 sized ones.

At this point you should have the perimeter. Now print the necessary clickfinity baseplates with connectors to fill the center.

A big thank you to James Boone for making available the Fusion360 file.