This is a a Remix of @Physic_Dude Macro lens adapter https://www.thingiverse.com/thing:621794
The entire design has been simplified into a completely cylindrical shape, increasing the resistance for heavier and longer lenses.
Compatible with the majority of the Nikon DX and Full-frame type F mount.
Once one (or more) ring is locked on the camera, you can set the aperture of your lens by rotating it on its axis (for lenses without manually adjusting the aperture)
Start small (20mm). Not all lenses work well with the larger adapters. You'll still be surprised with the results.
These are perfect for use with other mount-type conversion adapters and old or fast lenses with full manual control.
You can stack the extender.
Use rafts when using ABS , recommended when printing PLA pr PLA+ without Heated-Bed
May be printed without support, though the aperture tab may fail to function fully.