Customizable Name Heart Key Fob

This is a customizer for creating personalized heart-shaped key fobs which allows for any text in any font.

Also included is an STL of a blank heart with no name in case you want just the key fob without any name and an STL of a heart with the word “Love” engraved on it.

There are three styles available to choose for creating the name:

a hidden internal lithophane (hold it up to the light to see the name inside)
an engraving on the top surface
cut through the heart

Also included are STLs of the three examples shown in the main image.

Running the Customizer

Thingiverse hadn't run their customizer queue from Jul 10, 2020 to Aug 4, 2022 and may stop running it at any time again, so if they don't process your customized job, you will have to install and run OpenSCAD (free software) on your own computer to process the code to create your own customized models. See DrLex's instructions linked below for further details.

How to Run Customizer on Your Own Computer

You can use any font available on your system. The OpenSCAD "Help=>Font List" menu item shows what fonts are available. Most of the fonts listed in the drop-down selection for this thing can be downloaded from:
Google Fonts repository

To make a font available to OpenSCAD you have three options:
1) Install the font to the system. The procedure for installing system fonts is dependant on what operating system and what version you are using (Ubuntu Linux 16.01, Ubuntu Linux 20.04, Windows 7, Windows 10, Mac OS 9, Mac OS X, etc. ). If you don't know how to install a font on your system then search the web for instructions.
2) Add the font file to your fonts folder, creating the folder if it doesn't already exist. On Linux this would be something like "/home/YOURUSERNAME/.fonts" and on Windows 10 it would be something like "C:/Users/YOURUSERNAME/.fonts".
3) Add the font to the folder that contains the OpenSCAD file that you want to use the fonts. You will also have to add to the OpenSCAD file the 'use <fontname.ttf>' command substituting the filename of the font for "fontname.ttf".

The OpenSCAD "Help/Font List" menu item shows what fonts are available, so if it doesn't show up in the list then it is not available for use and you will need to try again.

For additional details, see the Using Fonts and Styles section on the following page:
https://en.m.wikibooks.org/wiki/OpenSCAD_User_Manual/Text