Remixed this awesome Prusa Mini Z Brace. Thank you to the original maker for sharing the editable files!

Reworked some area to make it compatible with the Prusa Mini Base. Also modified the holes for angled screws. Use 4 x M5 T-Nut, 2 x M5 x 12mm (on the bed extrusion) and 2 x M5 x 16mm (on the extruder extrusion)

For the hardware:

Screws: https://www.amazon.com/iExcell-Countersunk-Socket-Screws-Assortment/dp/B078L9DPFM/ref=sr_1_4?crid=2H2YCFXGWSE1D&keywords=m5%2Bflat&qid=1699895214&sprefix=m5%2Bflat%2Caps%2C104&sr=8-4&th=1

T-Nut: https://www.amazon.com/Hulless-Sliding-Fastener-Aluminum-Accessories/dp/B08NZMVP6N/ref=sr_1_3?crid=1DUUJF953XTPQ&keywords=m5+t+nut&qid=1699895285&sprefix=m5+t+nut%2Caps%2C117&sr=8-3

I've used 40% infill.

I am recommending the use of PETG or stronger filament.