MGN12C Y-Axis Rails for SimpleCore Redux

This is a mod for the SimpleCore Redux that allows you to use MGN12C linear rails on the Y-Axis, ideal for those who cannot source T-SLOT 2020 extrusion easily, this will stick out of the frame by 4mm so please take that into account. The files are ready to print and I have included .F3D and .STEP for those who wish to modify, happy printing and enjoy! This mod is designed to use pins, M5 thread is not recommended for longevity, please use the 5mm pins from the BOM.