Nice variant of the spider. How is the 'corner anchor' used? It's not clear from the .scad (I usually have a 'ghost' version in the scad all the components, and my build process makes 'bed-ready' versions).

I have a pile of mods for Geeetech G2 in SCAD format, if you are interested:

https://github.com/ezrec/geeetech-g2-mods