I designed and printed this grip because my tattoo artist friend used wooden sticks and tape to secure his needles and it didn't seem comfortable. After doing a bit of research online and consulting him and some other friends I landed on a design based on a drawing tablet pen.
My best results were at 0.12mm layer height, 20% infill and supports. The supports may be a bit troublesome to remove but after a bit of sanding and paint it looks and feels fine.
Printed on Ender 3 pro with PLA.
.step file included
The author hasn't provided the model origin yet.