Tuckbox

A similar generator for card boxes like Tuckbox is https://www.templatemaker.nl/de/cardbox

Tuckbox is not a well written extension for laser cutting output. But you can simply do the following to make laser files:

1. Create a tuckbox
2. Select all and colorize it to blue
   

   

3. Duplicate it, colorize it red, ungroup all, run union all for the duplicate selection, remove the fill color. You get the outline like this:
   

   
   

   
   

The outer contour will be processed by laser twice (first engraving, then cutting). It consumes more time but it basically works