This is a remix of greipuf great design. I did find the Dpad part was too small. I enlarged it 7.5%.
I made a shim you can glue on to the bottom to accommodate various switch heights. the shim is 1.8mm with a hole in the middle, you can increase or decrease the z size in your slicer for best results with your switches.
I purchased the keyboard switches off of Amazon. Found here -> https://www.amazon.com/dp/B0BXPCGG5P?ref=ppx_yo2ov_dt_b_fed_asin_title

You'll still need to download the original of this make for the box part.

I made a retro arcade controller with spinner and needed to add a dpad to navigate menu's on Retropie and set up controller easier.