GMKtec NucBox K8 Plus Mount for Opengrid Lite

openGrid Lite Mount for GMKtec NucBox K8 Plus (54.5mm spacing)

A clean, low-profile bracket to clip a GMKtec NucBox K8 Plus onto an openGrid board.

It uses two standard openGrid Lite snaps spaced 56mm apart (two 28mm grid cells), with mounting holes spaced at 54.5mm center-to-center for M2 screws. It should also fit any other mini PC or board using the same 54.5mm hole spacing.

A few things were prioritized here:
- 10mm standoff gap: Gives the mini PC's intake fan room to pull fresh air. The bridge underneath is arched so air flows straight through rather than getting trapped against the openGrid tile.
- Faceted shape matching openGrid: The mount lofts up from the octagonal openGrid snap footprint into the screw towers, matching the grid's visual style.
- Hollow core: The towers are cored out from the bottom, which cuts print time and material without making the bracket flimsy.
- Tool and screw clearance: 5.6mm counterbores from the underside take a standard 4mm screw head and leave enough room for a screwdriver or hex bit. The flat shoulder gives you exactly 5mm of screw thread passing into the PC chassis.
- No supports needed: All slopes and underside knees stay at 45 degrees or steeper.

Hardware needed

- 2x M2 machine screws: The mount's top deck is 5mm thick. Pick screw length so you get 5mm plus whatever thread depth your chassis needs, 8mm worked fine for me.

Print settings
- Orientation: Flat on the build plate (either upright on the snap pads or upside down on the flat top deck).
- Supports: None
- Walls: 3 or 4 perimeters for sturdy screw bosses.
- Infill: 15%