AsciiMesh

This tool was designed to convert Ascii Art and Text into 3D printable tiles, just copy/paste into the text window and select Generate, and it will spit out a 3D STL file of the text.

You can adjust the scale in millimeters of the Text Mesh in the Config Menu.

For printing larger Ascii Art or Text its advised to copy/paste regions of the text instead of all at once, the tile back plate scales to the text inputted into the text dialog, including white space. So if you want to add a buffer or border around your text simply add white space around it.