Sorry for my english.why when I engrave is the text transparent?

Sorry for my english.why when I engrave is the text transparent? I would like the result to be like in the second photo, that is white.
I hope I was clear

I think this is not visible because during the engraving you had to stop blowing. To have a visible engraving must blow during the engraving.

Estás seguro que es acrílico 100% ese acabado lo da es el plastico

It looks like you are laser cutting the text rather than rastering it.

Also cast acrylic engraves better than extruded.

Tnx for support…problem was not acrylic 100%

ciao ho lo stesso problema come hai risolto ?