Parametric index card for small notebooks like Moleskine, Field Notes or Rite in the Rain

The design was created in OpenSCAD and can be easily adapted to any notebook or its dimensions. The only limitation is the size of the printbed of the 3D printer.

Design Modification

In the design file I have included examples of three notebooks that I use. These can be activated simply by commenting in or out the corresponding section. The width, height and radius of the corners can be adjusted for each notebook.

insert_width=85;

insert_height=140;

insert_thickness=1.4;

insert_radius=6;

In addition, the thickness of the index card, the width and height of the tabs and the width of the pen can be changed.

top_tab_width=20;

top_tab_height=5;

top_tab_position=0; // 1 = right, everything else = leftside_tab_width=10;side_tab_height=25;pen_thickness=8;

To activate either top tab, side tab, or both, the following add ons must be commented in or out in addition to the “basic_inlet();” which is the index card without any further functions.

//top_tab();

//side_tab();

If the pen holder on the side is to be used ("penholder();"), the side tab must be commented out beforehand. The top tab can still be used separately if required.

Using the pen holder

To use the pen holder, you need a small rubber band that has to be threaded through the tab and then secures the pen.

It is also possible to use a much longer rubber band to secure the index card in the notebook and to keep the notebook securely closed.

A small piece of tape can be attached to the end of the elastic band so that it can be easily lifted out of the safety catch and gripped for the opening and closing process.

Have fun !