rOtring Isograph Reservoir Funnel - 3D Model

This is a downloadable 3D model, not a physical product.

Matthew uses rOtring isograph technical pens, and while he loves the pen, refilling the ink is almost always the harrowing experience of trying not to spill the ink when refilling the reservoir.

So he designed a 3D printed funnel that friction fits into the ink reservoir. The funnel’s neck is fluted to allow air to escape while the reservoir is being filled with ink. The sides of the funnel are hexagon shaped for an easy grip.

Note: this will not fit ink reservoirs for other pen brands. I have models specific to Koh-i-Noor and Staedtler available for download