SJ4000 compatible lens cap, depending how accurate your printer is this should fit, otherwise might need tiny bit of scaling. Skeleton to mount sj4000 properly and small handle with string loop at the end.
sj4000_lens_cap.stl | 516.2KB | |
sj4000_Skeleton.stl | 239.3KB | |
sj4000_small_handle.stl | 809.8KB |