12.
A cheap sheet-metal 90-degree joint
A small mechanical detail turns flat sheet metal into a stronger fastened joint by retaining the nut and resisting shear
@emm0sh on Backlist
2 appearances on the backlist front page in the last 30 days.
8.
One kernel runs much of the MCAD market
Parasolid underlies SolidWorks, NX, Onshape, Shapr3D, Plasticity, and many CAD startups, making one geometry engine a hidden industry dependency