LZButt

This is a back step adding Lego compatibility back to the ZButt system (https://github.com/imyownyear/Z-Butt/wiki). By default they still fit inside a Lego box but they haven't clipped into lego tiles for quite some time. I do not know why I needed to make this other then the fact that I found ZButt while looking for L2K models soooo my OCD was stuck on the idea of them clicking into Lego. I only made the MX 1u style so far but now that I have a base design I could do more if anyone else likes the idea.

I also suggest checking out this Stem Cavity Reservoir Insert (https://www.thingiverse.com/thing:4578103) it will fit on top of these sprues making an ideal resin reservoir when pooring your molds.