I use these Painting Handle myself. Modeled in rhinoceros and printed on Ender FDM printer. After you insert the bolt into the hole of the clamping handle, fill the top with glue or epoxy.
Free STL file Painting Handle V.3.2 🖼️・3D printer design to download・Cults
3D file Painting Handle 🖼️・Template to download and 3D print・Cults
Free STL file Painting Handle V.3.2 🖼️・3D printer design to download・Cults
Model Painting Handle by fetchbeer, Download free STL model
Miniature Painting Handle - v3 by Matt C, Download free STL model
painting handle 3D Models to Print - yeggi
Free STL file Painting Handle V.3.2 🖼️・3D printer design to download・Cults
STL file Handle painting holder 🖼️・3D printer design to download・Cults
painting handle 3D Models to Print - yeggi