Magnet Bottom Gridfinity Baseplate

I never could find a baseplate that had magnets on the bottom side, so I created a remix of one of my favorite baseplates by RIP_Plu_Koon, but made some modifications to reduce plastic, print times, magnet usage, and assembly time. If you want to see some videos on the design process and choices are links to my favorite magnets for this, they're on my website. Most of my storage racks and drawers are metal, and securing via magnets is the way to go. Their baseplates are my all time favorites and I use them everywhere, but I wanted to make some changes. Support for magnets, but only facing the bottom. (I don't need magnet bins)Compatible with much larger magnetsOnly spots for magnets in the corners and center to reduce plastic waste, print times, number of magnets needed. For right now, I only had time to draft up the 5x5 version, so that is all that is available. But, I'm sharing the .STEP file in case anyone else wants to modify it for themselves or make it parametric and