'Real' single stroke fonts - converting from ttf

I am looking for a possbility to convert fonts to 'Real' single stroke fonts. (Or get from a download somewhere.)

With 'Real' single stroke font I mean a font - e.g. Arial - as a sequence of simple strokes, as opposed to outlines.

I learned from here how to convert the arial.ttf to arial.lff. But this gave me an outline.
Any try to do this with a single stroke font crashed the tool (eg. Comfortaa)

Background:
I want to create a dxf-file for a lasercutter, which cut's the part and engraves text on it.
So therefore I don't need and want double lined fonts.

Is there a 'ttf2lff_s' (for single stroke)  tool? Or any other possibility to do this?
Any hints welcome.

There is no tool for that. A ttf font never is really sticky, but always a filled outline.It would be a complex coding task to convert this to a zero-thickness line. You will have to use one of the provided sticky fonts like iso or simplex.

A workaround could be to write the text in an  office or graphics application, export it a raster format (png) and then use a vectorizing app suited for cad ( needs function "centerline") to export to dxf. It won't be editable as text anymore, though.

Ok, thanks.