Need urgent help to make into a laser cut file [ grasshopper script ]

Overall, I need to somehow make this shape [all of it, but if not just the curve thing..] into a closed brep and then waffle it [ and then flatten it? so that I can laser cut asap ] but I’m stuck!!!

Currently, my script overall looks like this:

And my model looks like this:

Also, I used this video [ https://youtu.be/R16cdbMeSNg?list=LL ] for help on the overall shape, but i don’t know why the opening is blocked off for some reason…

Could the grasshopper Gods please give me some pointers I’m completely lost on how to laser cut this at all

Please share your definition. It’ll be easier for someone to help you