Here is a grab knob for an m10 bolt. The bolt head is pressed tightly into the hexagon recess and the cover is then super-glued in place. Choose the length of the bolt to match your application.
The knob design is very ergonomic and comfortable to hold and apply the needed torque. At the same time it can be easily rotated with one finger if the bolt is free spinning.
M10_Grab_Knob_Body.STL | 643.9KB | |
M10_Grab_Knob_Cover.STL | 25.0KB |