If you are testing this out, please let us know if you see bugs or unexpected behaviour. I am very capable of writing bugs, just ask @Secret_Sauce! GitHub has a bug reporting tool: new issue. Posting them publicly means we can all see what the issue is. You won’t hurt my feelings, this is just a hobby for me.
Also if you are using your Glowforge for production work (making the same design multiple times) we want to hear how the options in the post work for you. Particularly if you are doing anything like, say, fixtures to position materials on the bed repeatedly. In that case I don’t know if centering is going to work for you. @Secret_Sauce did a great job on the video and he shows how to use the stock size and offsets to position the cuts within the Glowforge bed. We would like to know if this works for your use-case.