Tech Platform extension

Part to join two or more Tech Platforms, to make a bigger platform.
To make 4x4 or larger you could put a octagon plate in the middle, between the other four and connect it to 61 SM plates

You need a 61x61 SM style tile to connect two of these, used a hard plastic glue.
Lowered it into the plate to print like the original parts, can be printed standing for better stability when placed.
PLA 0.15 mm layer height

Update: added a connected plate

Will update as soon as I print this and more platform parts