I’m in a woodshop class this year so I have an abundance of tools now available
Even without that however, I’d be willing to help you cut whatever you need, even assembly possibly. I have my neighbor’s table saw, jigsaw, and sander on hand right now as I’m about to begin another 18” sub project using the much cheaper Dayton 18” Classic sub and another using two of the $30 JBL Subs you see people buying loads of when they go on sale ($130->$30 is 77% off!).