OpenSCAD Bevelled Text

I wanted to 3D print a key tag using someone’s initials. I found that extruded text with square edges in OpenSCAD is straightforward but I wanted bevelled edges, which turned out to be not so easy. So this “thing” shows the technique I came up with. The idea is to progressively increase the ‘linear_extrude()’ as the ‘offset()’ is progressively decreased. I tried do a ‘hull()’ between each subsequent layer but that failed because ‘hull()’ also fills in the insides of the letters, which was not w