.grip is a multifunctional Tool for your Hobby. It´s not just a simple Paint Handle with a Hand Rest, it´s also a mini Vice for Pieces with irregular Shapes oder uncommon sizes.
On first time Use, gently srew on the vice or Cap Holder, slightly turn it back and forth until it´s fastened. So you don´t ruin the Screw.
For the Vice assembly you need two rubber Bands. Watch the Pictures to learn how to build the Vice, but it should be self explainig.
Instead of Printing the Pins, you can use M4 Bolts.
On the Bottle Cap Mount you can use most standard screw Bottle Caps.
If you wan´t some more Bottle Caps, you can Print them too, just head over to JBijnens Bottle Caps. They work Perfect with .grip https://www.thingiverse.com/thing:806488
Added a Second Ring (ring-big.stl) for better using the Hand rest with the vice.
The Vice Main Plate, Jaws and the Bottlecap Mount should be printed with supports from Plate only turned on. Be sure to completely remove the Supports after print.