A simple triangle stencil! Good for tracing patterns or even airbrushing.
EDIT: I've added a second stencil with more triangles.
This is quite small due to my printer's bed size, but it should be a snap to resize in TinkerCad or the program of your choice.
| Triangle_Stencil.stl | 119.0KB | |
| Triangle_Stencil_2.stl | 131.5KB |
