PCIe slot 3.5" HDD Bracket with PCIe x1 riser cutout

The case for the D1800 BTC Mining board doesn't include a spot to mount a HDD or SSD, so I modified this for a mostly open PCI slot.
I printed this with high temperature PLA, but in my rig it still gets warm enough to make it sag.
You may have to adjust the width of the cutout, it fits very snug around whichever random brand riser cards I have.