These are two parametric FreeCAD adapters for drawing using the Roland GS-24 and GX-24 Vinyl Cutters. 3D print with solid infill with no adhesion platform.
Make sure that the gap is not perpendicular to the grip mechanism, otherwise it will not work. Make sure that the pen up/pen down mechanism has some freedom of movement (2-3 mm) before usage. For a bic crystal pen I use 150 g of force and 30 cm/s.
Licensed under MIT License, enjoy!
Francisco