The one thing that I really dislike about my Elegoo Jupiter is that the thumbscrews to hold down the resin vat are too short. It's a pain to loosen them because the handles for the tank are in the way.

So I designed taller ones. Print 2 of these and cut 2 65mm sections of M8 threaded rod. Add a little glue to the threads in the knobs and then screw in the threaded rod until it bottoms out. When the glue dries, you'll have much nicer thumbscrews.